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72dc1c09 GKH |
1 | /****************************************************************************** |
2 | * | |
3 | * Driver for Option High Speed Mobile Devices. | |
4 | * | |
5 | * Copyright (C) 2008 Option International | |
6 | * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd) | |
7 | * <ajb@spheresystems.co.uk> | |
8 | * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de> | |
9 | * Copyright (C) 2008 Novell, Inc. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | |
23 | * USA | |
24 | * | |
25 | * | |
26 | *****************************************************************************/ | |
27 | ||
28 | /****************************************************************************** | |
29 | * | |
30 | * Description of the device: | |
31 | * | |
32 | * Interface 0: Contains the IP network interface on the bulk end points. | |
33 | * The multiplexed serial ports are using the interrupt and | |
34 | * control endpoints. | |
35 | * Interrupt contains a bitmap telling which multiplexed | |
36 | * serialport needs servicing. | |
37 | * | |
38 | * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the | |
39 | * port is opened, as this have a huge impact on the network port | |
40 | * throughput. | |
41 | * | |
cd90ee17 DM |
42 | * Interface 2: Standard modem interface - circuit switched interface, should |
43 | * not be used. | |
72dc1c09 GKH |
44 | * |
45 | *****************************************************************************/ | |
46 | ||
47 | #include <linux/sched.h> | |
48 | #include <linux/slab.h> | |
49 | #include <linux/init.h> | |
50 | #include <linux/delay.h> | |
51 | #include <linux/netdevice.h> | |
52 | #include <linux/module.h> | |
53 | #include <linux/ethtool.h> | |
54 | #include <linux/usb.h> | |
55 | #include <linux/timer.h> | |
56 | #include <linux/tty.h> | |
57 | #include <linux/tty_driver.h> | |
58 | #include <linux/tty_flip.h> | |
59 | #include <linux/kmod.h> | |
60 | #include <linux/rfkill.h> | |
61 | #include <linux/ip.h> | |
62 | #include <linux/uaccess.h> | |
63 | #include <linux/usb/cdc.h> | |
64 | #include <net/arp.h> | |
65 | #include <asm/byteorder.h> | |
66 | ||
67 | ||
68 | #define DRIVER_VERSION "1.2" | |
69 | #define MOD_AUTHOR "Option Wireless" | |
70 | #define MOD_DESCRIPTION "USB High Speed Option driver" | |
71 | #define MOD_LICENSE "GPL" | |
72 | ||
73 | #define HSO_MAX_NET_DEVICES 10 | |
74 | #define HSO__MAX_MTU 2048 | |
75 | #define DEFAULT_MTU 1500 | |
76 | #define DEFAULT_MRU 1500 | |
77 | ||
78 | #define CTRL_URB_RX_SIZE 1024 | |
79 | #define CTRL_URB_TX_SIZE 64 | |
80 | ||
81 | #define BULK_URB_RX_SIZE 4096 | |
82 | #define BULK_URB_TX_SIZE 8192 | |
83 | ||
84 | #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU | |
85 | #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU | |
86 | #define MUX_BULK_RX_BUF_COUNT 4 | |
87 | #define USB_TYPE_OPTION_VENDOR 0x20 | |
88 | ||
89 | /* These definitions are used with the struct hso_net flags element */ | |
90 | /* - use *_bit operations on it. (bit indices not values.) */ | |
91 | #define HSO_NET_RUNNING 0 | |
92 | ||
93 | #define HSO_NET_TX_TIMEOUT (HZ*10) | |
94 | ||
72dc1c09 GKH |
95 | #define HSO_SERIAL_MAGIC 0x48534f31 |
96 | ||
97 | /* Number of ttys to handle */ | |
98 | #define HSO_SERIAL_TTY_MINORS 256 | |
99 | ||
100 | #define MAX_RX_URBS 2 | |
101 | ||
0235f641 GKH |
102 | static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty) |
103 | { | |
104 | if (tty) | |
105 | return tty->driver_data; | |
106 | return NULL; | |
107 | } | |
72dc1c09 GKH |
108 | |
109 | /*****************************************************************************/ | |
110 | /* Debugging functions */ | |
111 | /*****************************************************************************/ | |
112 | #define D__(lvl_, fmt, arg...) \ | |
113 | do { \ | |
114 | printk(lvl_ "[%d:%s]: " fmt "\n", \ | |
115 | __LINE__, __func__, ## arg); \ | |
116 | } while (0) | |
117 | ||
118 | #define D_(lvl, args...) \ | |
119 | do { \ | |
120 | if (lvl & debug) \ | |
121 | D__(KERN_INFO, args); \ | |
122 | } while (0) | |
123 | ||
124 | #define D1(args...) D_(0x01, ##args) | |
125 | #define D2(args...) D_(0x02, ##args) | |
126 | #define D3(args...) D_(0x04, ##args) | |
127 | #define D4(args...) D_(0x08, ##args) | |
128 | #define D5(args...) D_(0x10, ##args) | |
129 | ||
130 | /*****************************************************************************/ | |
131 | /* Enumerators */ | |
132 | /*****************************************************************************/ | |
133 | enum pkt_parse_state { | |
134 | WAIT_IP, | |
135 | WAIT_DATA, | |
136 | WAIT_SYNC | |
137 | }; | |
138 | ||
139 | /*****************************************************************************/ | |
140 | /* Structs */ | |
141 | /*****************************************************************************/ | |
142 | ||
143 | struct hso_shared_int { | |
144 | struct usb_endpoint_descriptor *intr_endp; | |
145 | void *shared_intr_buf; | |
146 | struct urb *shared_intr_urb; | |
147 | struct usb_device *usb; | |
148 | int use_count; | |
149 | int ref_count; | |
150 | struct mutex shared_int_lock; | |
151 | }; | |
152 | ||
153 | struct hso_net { | |
154 | struct hso_device *parent; | |
155 | struct net_device *net; | |
156 | struct rfkill *rfkill; | |
157 | ||
158 | struct usb_endpoint_descriptor *in_endp; | |
159 | struct usb_endpoint_descriptor *out_endp; | |
160 | ||
161 | struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT]; | |
162 | struct urb *mux_bulk_tx_urb; | |
163 | void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT]; | |
164 | void *mux_bulk_tx_buf; | |
165 | ||
166 | struct sk_buff *skb_rx_buf; | |
167 | struct sk_buff *skb_tx_buf; | |
168 | ||
169 | enum pkt_parse_state rx_parse_state; | |
170 | spinlock_t net_lock; | |
171 | ||
172 | unsigned short rx_buf_size; | |
173 | unsigned short rx_buf_missing; | |
174 | struct iphdr rx_ip_hdr; | |
175 | ||
176 | unsigned long flags; | |
177 | }; | |
178 | ||
8ef5ba63 DJB |
179 | enum rx_ctrl_state{ |
180 | RX_IDLE, | |
181 | RX_SENT, | |
182 | RX_PENDING | |
183 | }; | |
184 | ||
72dc1c09 GKH |
185 | struct hso_serial { |
186 | struct hso_device *parent; | |
187 | int magic; | |
188 | u8 minor; | |
189 | ||
190 | struct hso_shared_int *shared_int; | |
191 | ||
192 | /* rx/tx urb could be either a bulk urb or a control urb depending | |
193 | on which serial port it is used on. */ | |
194 | struct urb *rx_urb[MAX_RX_URBS]; | |
195 | u8 num_rx_urbs; | |
196 | u8 *rx_data[MAX_RX_URBS]; | |
197 | u16 rx_data_length; /* should contain allocated length */ | |
198 | ||
199 | struct urb *tx_urb; | |
200 | u8 *tx_data; | |
201 | u8 *tx_buffer; | |
202 | u16 tx_data_length; /* should contain allocated length */ | |
203 | u16 tx_data_count; | |
204 | u16 tx_buffer_count; | |
205 | struct usb_ctrlrequest ctrl_req_tx; | |
206 | struct usb_ctrlrequest ctrl_req_rx; | |
207 | ||
208 | struct usb_endpoint_descriptor *in_endp; | |
209 | struct usb_endpoint_descriptor *out_endp; | |
210 | ||
8ef5ba63 | 211 | enum rx_ctrl_state rx_state; |
72dc1c09 GKH |
212 | u8 rts_state; |
213 | u8 dtr_state; | |
214 | unsigned tx_urb_used:1; | |
215 | ||
216 | /* from usb_serial_port */ | |
217 | struct tty_struct *tty; | |
218 | int open_count; | |
219 | spinlock_t serial_lock; | |
220 | ||
221 | int (*write_data) (struct hso_serial *serial); | |
8ef5ba63 DJB |
222 | /* Hacks required to get flow control |
223 | * working on the serial receive buffers | |
224 | * so as not to drop characters on the floor. | |
225 | */ | |
226 | int curr_rx_urb_idx; | |
227 | u16 curr_rx_urb_offset; | |
228 | u8 rx_urb_filled[MAX_RX_URBS]; | |
229 | struct tasklet_struct unthrottle_tasklet; | |
230 | struct work_struct retry_unthrottle_workqueue; | |
72dc1c09 GKH |
231 | }; |
232 | ||
52429eb2 DJB |
233 | struct hso_mutex_t { |
234 | struct mutex mutex; | |
235 | u8 allocated; | |
236 | }; | |
237 | ||
72dc1c09 GKH |
238 | struct hso_device { |
239 | union { | |
240 | struct hso_serial *dev_serial; | |
241 | struct hso_net *dev_net; | |
242 | } port_data; | |
243 | ||
244 | u32 port_spec; | |
245 | ||
246 | u8 is_active; | |
247 | u8 usb_gone; | |
248 | struct work_struct async_get_intf; | |
249 | struct work_struct async_put_intf; | |
250 | ||
251 | struct usb_device *usb; | |
252 | struct usb_interface *interface; | |
253 | ||
254 | struct device *dev; | |
255 | struct kref ref; | |
52429eb2 | 256 | struct hso_mutex_t *mutex; |
72dc1c09 GKH |
257 | }; |
258 | ||
259 | /* Type of interface */ | |
260 | #define HSO_INTF_MASK 0xFF00 | |
261 | #define HSO_INTF_MUX 0x0100 | |
262 | #define HSO_INTF_BULK 0x0200 | |
263 | ||
264 | /* Type of port */ | |
265 | #define HSO_PORT_MASK 0xFF | |
266 | #define HSO_PORT_NO_PORT 0x0 | |
267 | #define HSO_PORT_CONTROL 0x1 | |
268 | #define HSO_PORT_APP 0x2 | |
269 | #define HSO_PORT_GPS 0x3 | |
270 | #define HSO_PORT_PCSC 0x4 | |
271 | #define HSO_PORT_APP2 0x5 | |
272 | #define HSO_PORT_GPS_CONTROL 0x6 | |
273 | #define HSO_PORT_MSD 0x7 | |
274 | #define HSO_PORT_VOICE 0x8 | |
275 | #define HSO_PORT_DIAG2 0x9 | |
276 | #define HSO_PORT_DIAG 0x10 | |
277 | #define HSO_PORT_MODEM 0x11 | |
278 | #define HSO_PORT_NETWORK 0x12 | |
279 | ||
280 | /* Additional device info */ | |
281 | #define HSO_INFO_MASK 0xFF000000 | |
282 | #define HSO_INFO_CRC_BUG 0x01000000 | |
283 | ||
284 | /*****************************************************************************/ | |
285 | /* Prototypes */ | |
286 | /*****************************************************************************/ | |
287 | /* Serial driver functions */ | |
288 | static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, | |
289 | unsigned int set, unsigned int clear); | |
290 | static void ctrl_callback(struct urb *urb); | |
8ef5ba63 | 291 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); |
72dc1c09 GKH |
292 | static void hso_kick_transmit(struct hso_serial *serial); |
293 | /* Helper functions */ | |
294 | static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, | |
295 | struct usb_device *usb, gfp_t gfp); | |
296 | static void log_usb_status(int status, const char *function); | |
297 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, | |
298 | int type, int dir); | |
299 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); | |
300 | static void hso_free_interface(struct usb_interface *intf); | |
301 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); | |
302 | static int hso_stop_serial_device(struct hso_device *hso_dev); | |
303 | static int hso_start_net_device(struct hso_device *hso_dev); | |
304 | static void hso_free_shared_int(struct hso_shared_int *shared_int); | |
305 | static int hso_stop_net_device(struct hso_device *hso_dev); | |
306 | static void hso_serial_ref_free(struct kref *ref); | |
8ef5ba63 DJB |
307 | static void hso_std_serial_read_bulk_callback(struct urb *urb); |
308 | static int hso_mux_serial_read(struct hso_serial *serial); | |
72dc1c09 GKH |
309 | static void async_get_intf(struct work_struct *data); |
310 | static void async_put_intf(struct work_struct *data); | |
311 | static int hso_put_activity(struct hso_device *hso_dev); | |
312 | static int hso_get_activity(struct hso_device *hso_dev); | |
cd90ee17 | 313 | |
72dc1c09 GKH |
314 | /*****************************************************************************/ |
315 | /* Helping functions */ | |
316 | /*****************************************************************************/ | |
317 | ||
318 | /* #define DEBUG */ | |
319 | ||
0235f641 GKH |
320 | static inline struct hso_net *dev2net(struct hso_device *hso_dev) |
321 | { | |
322 | return hso_dev->port_data.dev_net; | |
323 | } | |
324 | ||
325 | static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) | |
326 | { | |
327 | return hso_dev->port_data.dev_serial; | |
328 | } | |
72dc1c09 GKH |
329 | |
330 | /* Debugging functions */ | |
331 | #ifdef DEBUG | |
332 | static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, | |
333 | unsigned int len) | |
334 | { | |
0235f641 | 335 | static char name[255]; |
72dc1c09 | 336 | |
0235f641 GKH |
337 | sprintf(name, "hso[%d:%s]", line_count, func_name); |
338 | print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); | |
72dc1c09 GKH |
339 | } |
340 | ||
341 | #define DUMP(buf_, len_) \ | |
342 | dbg_dump(__LINE__, __func__, buf_, len_) | |
343 | ||
344 | #define DUMP1(buf_, len_) \ | |
345 | do { \ | |
346 | if (0x01 & debug) \ | |
347 | DUMP(buf_, len_); \ | |
348 | } while (0) | |
349 | #else | |
350 | #define DUMP(buf_, len_) | |
351 | #define DUMP1(buf_, len_) | |
352 | #endif | |
353 | ||
354 | /* module parameters */ | |
355 | static int debug; | |
356 | static int tty_major; | |
357 | static int disable_net; | |
358 | ||
359 | /* driver info */ | |
360 | static const char driver_name[] = "hso"; | |
361 | static const char tty_filename[] = "ttyHS"; | |
362 | static const char *version = __FILE__ ": " DRIVER_VERSION " " MOD_AUTHOR; | |
363 | /* the usb driver itself (registered in hso_init) */ | |
364 | static struct usb_driver hso_driver; | |
365 | /* serial structures */ | |
366 | static struct tty_driver *tty_drv; | |
367 | static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; | |
368 | static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; | |
369 | static spinlock_t serial_table_lock; | |
370 | static struct ktermios *hso_serial_termios[HSO_SERIAL_TTY_MINORS]; | |
371 | static struct ktermios *hso_serial_termios_locked[HSO_SERIAL_TTY_MINORS]; | |
52429eb2 DJB |
372 | /* hso_mutex_table has to be declared statically as hso_device |
373 | * is freed in hso_serial_open & hso_serial_close while | |
374 | * the mutex is still in use. | |
375 | */ | |
376 | #define HSO_NUM_MUTEXES (HSO_SERIAL_TTY_MINORS+HSO_MAX_NET_DEVICES) | |
377 | static struct hso_mutex_t hso_mutex_table[HSO_NUM_MUTEXES]; | |
378 | static spinlock_t hso_mutex_lock; | |
72dc1c09 GKH |
379 | |
380 | static const s32 default_port_spec[] = { | |
381 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
382 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
383 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
384 | 0 | |
385 | }; | |
386 | ||
387 | static const s32 icon321_port_spec[] = { | |
388 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
389 | HSO_INTF_BULK | HSO_PORT_DIAG2, | |
390 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
391 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
392 | 0 | |
393 | }; | |
394 | ||
395 | #define default_port_device(vendor, product) \ | |
396 | USB_DEVICE(vendor, product), \ | |
397 | .driver_info = (kernel_ulong_t)default_port_spec | |
398 | ||
399 | #define icon321_port_device(vendor, product) \ | |
400 | USB_DEVICE(vendor, product), \ | |
401 | .driver_info = (kernel_ulong_t)icon321_port_spec | |
402 | ||
403 | /* list of devices we support */ | |
404 | static const struct usb_device_id hso_ids[] = { | |
405 | {default_port_device(0x0af0, 0x6711)}, | |
406 | {default_port_device(0x0af0, 0x6731)}, | |
407 | {default_port_device(0x0af0, 0x6751)}, | |
408 | {default_port_device(0x0af0, 0x6771)}, | |
409 | {default_port_device(0x0af0, 0x6791)}, | |
410 | {default_port_device(0x0af0, 0x6811)}, | |
411 | {default_port_device(0x0af0, 0x6911)}, | |
412 | {default_port_device(0x0af0, 0x6951)}, | |
413 | {default_port_device(0x0af0, 0x6971)}, | |
414 | {default_port_device(0x0af0, 0x7011)}, | |
415 | {default_port_device(0x0af0, 0x7031)}, | |
416 | {default_port_device(0x0af0, 0x7051)}, | |
417 | {default_port_device(0x0af0, 0x7071)}, | |
418 | {default_port_device(0x0af0, 0x7111)}, | |
419 | {default_port_device(0x0af0, 0x7211)}, | |
420 | {default_port_device(0x0af0, 0x7251)}, | |
421 | {default_port_device(0x0af0, 0x7271)}, | |
422 | {default_port_device(0x0af0, 0x7311)}, | |
423 | {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ | |
424 | {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ | |
425 | {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ | |
95eacee8 | 426 | {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */ |
72dc1c09 GKH |
427 | {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ |
428 | {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ | |
429 | {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ | |
430 | {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ | |
431 | {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ | |
bab04c3a DJB |
432 | {USB_DEVICE(0x0af0, 0x7701)}, |
433 | {USB_DEVICE(0x0af0, 0x7801)}, | |
434 | {USB_DEVICE(0x0af0, 0x7901)}, | |
435 | {USB_DEVICE(0x0af0, 0x7361)}, | |
436 | {icon321_port_device(0x0af0, 0xd051)}, | |
72dc1c09 GKH |
437 | {} |
438 | }; | |
439 | MODULE_DEVICE_TABLE(usb, hso_ids); | |
440 | ||
441 | /* Sysfs attribute */ | |
442 | static ssize_t hso_sysfs_show_porttype(struct device *dev, | |
443 | struct device_attribute *attr, | |
444 | char *buf) | |
445 | { | |
446 | struct hso_device *hso_dev = dev->driver_data; | |
447 | char *port_name; | |
448 | ||
449 | if (!hso_dev) | |
450 | return 0; | |
451 | ||
452 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
453 | case HSO_PORT_CONTROL: | |
454 | port_name = "Control"; | |
455 | break; | |
456 | case HSO_PORT_APP: | |
457 | port_name = "Application"; | |
458 | break; | |
459 | case HSO_PORT_APP2: | |
460 | port_name = "Application2"; | |
461 | break; | |
462 | case HSO_PORT_GPS: | |
463 | port_name = "GPS"; | |
464 | break; | |
465 | case HSO_PORT_GPS_CONTROL: | |
466 | port_name = "GPS Control"; | |
467 | break; | |
468 | case HSO_PORT_PCSC: | |
469 | port_name = "PCSC"; | |
470 | break; | |
471 | case HSO_PORT_DIAG: | |
472 | port_name = "Diagnostic"; | |
473 | break; | |
474 | case HSO_PORT_DIAG2: | |
475 | port_name = "Diagnostic2"; | |
476 | break; | |
477 | case HSO_PORT_MODEM: | |
478 | port_name = "Modem"; | |
479 | break; | |
480 | case HSO_PORT_NETWORK: | |
481 | port_name = "Network"; | |
482 | break; | |
483 | default: | |
484 | port_name = "Unknown"; | |
485 | break; | |
486 | } | |
487 | ||
488 | return sprintf(buf, "%s\n", port_name); | |
489 | } | |
490 | static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); | |
491 | ||
8ef5ba63 DJB |
492 | static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) |
493 | { | |
494 | int idx; | |
495 | ||
496 | for (idx = 0; idx < serial->num_rx_urbs; idx++) | |
497 | if (serial->rx_urb[idx] == urb) | |
498 | return idx; | |
499 | dev_err(serial->parent->dev, "hso_urb_to_index failed\n"); | |
500 | return -1; | |
501 | } | |
502 | ||
72dc1c09 GKH |
503 | /* converts mux value to a port spec value */ |
504 | static u32 hso_mux_to_port(int mux) | |
505 | { | |
506 | u32 result; | |
507 | ||
508 | switch (mux) { | |
509 | case 0x1: | |
510 | result = HSO_PORT_CONTROL; | |
511 | break; | |
512 | case 0x2: | |
513 | result = HSO_PORT_APP; | |
514 | break; | |
515 | case 0x4: | |
516 | result = HSO_PORT_PCSC; | |
517 | break; | |
518 | case 0x8: | |
519 | result = HSO_PORT_GPS; | |
520 | break; | |
521 | case 0x10: | |
522 | result = HSO_PORT_APP2; | |
523 | break; | |
524 | default: | |
525 | result = HSO_PORT_NO_PORT; | |
526 | } | |
527 | return result; | |
528 | } | |
529 | ||
530 | /* converts port spec value to a mux value */ | |
531 | static u32 hso_port_to_mux(int port) | |
532 | { | |
533 | u32 result; | |
534 | ||
535 | switch (port & HSO_PORT_MASK) { | |
536 | case HSO_PORT_CONTROL: | |
537 | result = 0x0; | |
538 | break; | |
539 | case HSO_PORT_APP: | |
540 | result = 0x1; | |
541 | break; | |
542 | case HSO_PORT_PCSC: | |
543 | result = 0x2; | |
544 | break; | |
545 | case HSO_PORT_GPS: | |
546 | result = 0x3; | |
547 | break; | |
548 | case HSO_PORT_APP2: | |
549 | result = 0x4; | |
550 | break; | |
551 | default: | |
552 | result = 0x0; | |
553 | } | |
554 | return result; | |
555 | } | |
556 | ||
557 | static struct hso_serial *get_serial_by_shared_int_and_type( | |
558 | struct hso_shared_int *shared_int, | |
559 | int mux) | |
560 | { | |
561 | int i, port; | |
562 | ||
563 | port = hso_mux_to_port(mux); | |
564 | ||
565 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
566 | if (serial_table[i] | |
567 | && (dev2ser(serial_table[i])->shared_int == shared_int) | |
568 | && ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { | |
569 | return dev2ser(serial_table[i]); | |
570 | } | |
571 | } | |
572 | ||
573 | return NULL; | |
574 | } | |
575 | ||
576 | static struct hso_serial *get_serial_by_index(unsigned index) | |
577 | { | |
0235f641 | 578 | struct hso_serial *serial = NULL; |
72dc1c09 GKH |
579 | unsigned long flags; |
580 | ||
72dc1c09 | 581 | spin_lock_irqsave(&serial_table_lock, flags); |
0235f641 GKH |
582 | if (serial_table[index]) |
583 | serial = dev2ser(serial_table[index]); | |
72dc1c09 GKH |
584 | spin_unlock_irqrestore(&serial_table_lock, flags); |
585 | ||
586 | return serial; | |
587 | } | |
588 | ||
589 | static int get_free_serial_index(void) | |
590 | { | |
591 | int index; | |
592 | unsigned long flags; | |
593 | ||
594 | spin_lock_irqsave(&serial_table_lock, flags); | |
595 | for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) { | |
596 | if (serial_table[index] == NULL) { | |
597 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
598 | return index; | |
599 | } | |
600 | } | |
601 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
602 | ||
603 | printk(KERN_ERR "%s: no free serial devices in table\n", __func__); | |
604 | return -1; | |
605 | } | |
606 | ||
607 | static void set_serial_by_index(unsigned index, struct hso_serial *serial) | |
608 | { | |
609 | unsigned long flags; | |
0235f641 | 610 | |
72dc1c09 GKH |
611 | spin_lock_irqsave(&serial_table_lock, flags); |
612 | if (serial) | |
613 | serial_table[index] = serial->parent; | |
614 | else | |
615 | serial_table[index] = NULL; | |
616 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
617 | } | |
618 | ||
52429eb2 DJB |
619 | |
620 | static struct hso_mutex_t *hso_get_free_mutex(void) | |
621 | { | |
622 | int index; | |
623 | struct hso_mutex_t *curr_hso_mutex; | |
624 | ||
625 | spin_lock(&hso_mutex_lock); | |
626 | for (index = 0; index < HSO_NUM_MUTEXES; index++) { | |
627 | curr_hso_mutex = &hso_mutex_table[index]; | |
628 | if (!curr_hso_mutex->allocated) { | |
629 | curr_hso_mutex->allocated = 1; | |
630 | spin_unlock(&hso_mutex_lock); | |
631 | return curr_hso_mutex; | |
632 | } | |
633 | } | |
634 | printk(KERN_ERR "BUG %s: no free hso_mutexs devices in table\n" | |
635 | , __func__); | |
636 | spin_unlock(&hso_mutex_lock); | |
637 | return NULL; | |
638 | } | |
639 | ||
640 | static void hso_free_mutex(struct hso_mutex_t *mutex) | |
641 | { | |
642 | spin_lock(&hso_mutex_lock); | |
643 | mutex->allocated = 0; | |
644 | spin_unlock(&hso_mutex_lock); | |
645 | } | |
646 | ||
0235f641 | 647 | /* log a meaningful explanation of an USB status */ |
72dc1c09 GKH |
648 | static void log_usb_status(int status, const char *function) |
649 | { | |
650 | char *explanation; | |
651 | ||
652 | switch (status) { | |
653 | case -ENODEV: | |
654 | explanation = "no device"; | |
655 | break; | |
656 | case -ENOENT: | |
657 | explanation = "endpoint not enabled"; | |
658 | break; | |
659 | case -EPIPE: | |
660 | explanation = "endpoint stalled"; | |
661 | break; | |
662 | case -ENOSPC: | |
663 | explanation = "not enough bandwidth"; | |
664 | break; | |
665 | case -ESHUTDOWN: | |
666 | explanation = "device disabled"; | |
667 | break; | |
668 | case -EHOSTUNREACH: | |
669 | explanation = "device suspended"; | |
670 | break; | |
671 | case -EINVAL: | |
672 | case -EAGAIN: | |
673 | case -EFBIG: | |
674 | case -EMSGSIZE: | |
675 | explanation = "internal error"; | |
676 | break; | |
677 | default: | |
678 | explanation = "unknown status"; | |
679 | break; | |
680 | } | |
681 | D1("%s: received USB status - %s (%d)", function, explanation, status); | |
682 | } | |
683 | ||
684 | /* Network interface functions */ | |
685 | ||
686 | /* called when net interface is brought up by ifconfig */ | |
687 | static int hso_net_open(struct net_device *net) | |
688 | { | |
689 | struct hso_net *odev = netdev_priv(net); | |
690 | unsigned long flags = 0; | |
691 | ||
692 | if (!odev) { | |
693 | dev_err(&net->dev, "No net device !\n"); | |
694 | return -ENODEV; | |
695 | } | |
696 | ||
697 | odev->skb_tx_buf = NULL; | |
698 | ||
699 | /* setup environment */ | |
700 | spin_lock_irqsave(&odev->net_lock, flags); | |
701 | odev->rx_parse_state = WAIT_IP; | |
702 | odev->rx_buf_size = 0; | |
703 | odev->rx_buf_missing = sizeof(struct iphdr); | |
704 | spin_unlock_irqrestore(&odev->net_lock, flags); | |
705 | ||
706 | hso_start_net_device(odev->parent); | |
707 | ||
708 | /* We are up and running. */ | |
709 | set_bit(HSO_NET_RUNNING, &odev->flags); | |
710 | ||
711 | /* Tell the kernel we are ready to start receiving from it */ | |
712 | netif_start_queue(net); | |
713 | ||
714 | return 0; | |
715 | } | |
716 | ||
717 | /* called when interface is brought down by ifconfig */ | |
718 | static int hso_net_close(struct net_device *net) | |
719 | { | |
720 | struct hso_net *odev = netdev_priv(net); | |
721 | ||
722 | /* we don't need the queue anymore */ | |
723 | netif_stop_queue(net); | |
724 | /* no longer running */ | |
725 | clear_bit(HSO_NET_RUNNING, &odev->flags); | |
726 | ||
727 | hso_stop_net_device(odev->parent); | |
728 | ||
729 | /* done */ | |
730 | return 0; | |
731 | } | |
732 | ||
733 | /* USB tells is xmit done, we should start the netqueue again */ | |
734 | static void write_bulk_callback(struct urb *urb) | |
735 | { | |
736 | struct hso_net *odev = urb->context; | |
737 | int status = urb->status; | |
738 | ||
739 | /* Sanity check */ | |
740 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
741 | dev_err(&urb->dev->dev, "%s: device not running\n", __func__); | |
742 | return; | |
743 | } | |
744 | ||
745 | /* Do we still have a valid kernel network device? */ | |
746 | if (!netif_device_present(odev->net)) { | |
747 | dev_err(&urb->dev->dev, "%s: net device not present\n", | |
748 | __func__); | |
749 | return; | |
750 | } | |
751 | ||
752 | /* log status, but don't act on it, we don't need to resubmit anything | |
753 | * anyhow */ | |
754 | if (status) | |
755 | log_usb_status(status, __func__); | |
756 | ||
757 | hso_put_activity(odev->parent); | |
758 | ||
759 | /* Tell the network interface we are ready for another frame */ | |
760 | netif_wake_queue(odev->net); | |
761 | } | |
762 | ||
763 | /* called by kernel when we need to transmit a packet */ | |
764 | static int hso_net_start_xmit(struct sk_buff *skb, struct net_device *net) | |
765 | { | |
766 | struct hso_net *odev = netdev_priv(net); | |
767 | int result; | |
768 | ||
769 | /* Tell the kernel, "No more frames 'til we are done with this one." */ | |
770 | netif_stop_queue(net); | |
771 | if (hso_get_activity(odev->parent) == -EAGAIN) { | |
772 | odev->skb_tx_buf = skb; | |
773 | return 0; | |
774 | } | |
775 | ||
776 | /* log if asked */ | |
777 | DUMP1(skb->data, skb->len); | |
778 | /* Copy it from kernel memory to OUR memory */ | |
779 | memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len); | |
780 | D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE); | |
781 | ||
782 | /* Fill in the URB for shipping it out. */ | |
783 | usb_fill_bulk_urb(odev->mux_bulk_tx_urb, | |
784 | odev->parent->usb, | |
785 | usb_sndbulkpipe(odev->parent->usb, | |
786 | odev->out_endp-> | |
787 | bEndpointAddress & 0x7F), | |
788 | odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, | |
789 | odev); | |
790 | ||
791 | /* Deal with the Zero Length packet problem, I hope */ | |
792 | odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
793 | ||
794 | /* Send the URB on its merry way. */ | |
795 | result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); | |
796 | if (result) { | |
797 | dev_warn(&odev->parent->interface->dev, | |
798 | "failed mux_bulk_tx_urb %d", result); | |
799 | net->stats.tx_errors++; | |
800 | netif_start_queue(net); | |
801 | } else { | |
802 | net->stats.tx_packets++; | |
803 | net->stats.tx_bytes += skb->len; | |
804 | /* And tell the kernel when the last transmit started. */ | |
805 | net->trans_start = jiffies; | |
806 | } | |
807 | dev_kfree_skb(skb); | |
808 | /* we're done */ | |
809 | return result; | |
810 | } | |
811 | ||
812 | static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) | |
813 | { | |
814 | struct hso_net *odev = netdev_priv(net); | |
815 | ||
816 | strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); | |
817 | strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); | |
818 | usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info); | |
819 | } | |
820 | ||
821 | static struct ethtool_ops ops = { | |
822 | .get_drvinfo = hso_get_drvinfo, | |
823 | .get_link = ethtool_op_get_link | |
824 | }; | |
825 | ||
826 | /* called when a packet did not ack after watchdogtimeout */ | |
827 | static void hso_net_tx_timeout(struct net_device *net) | |
828 | { | |
829 | struct hso_net *odev = netdev_priv(net); | |
830 | ||
831 | if (!odev) | |
832 | return; | |
833 | ||
834 | /* Tell syslog we are hosed. */ | |
835 | dev_warn(&net->dev, "Tx timed out.\n"); | |
836 | ||
837 | /* Tear the waiting frame off the list */ | |
838 | if (odev->mux_bulk_tx_urb | |
839 | && (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) | |
840 | usb_unlink_urb(odev->mux_bulk_tx_urb); | |
841 | ||
842 | /* Update statistics */ | |
843 | net->stats.tx_errors++; | |
844 | } | |
845 | ||
846 | /* make a real packet from the received USB buffer */ | |
847 | static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, | |
848 | unsigned int count, unsigned char is_eop) | |
849 | { | |
850 | unsigned short temp_bytes; | |
851 | unsigned short buffer_offset = 0; | |
852 | unsigned short frame_len; | |
853 | unsigned char *tmp_rx_buf; | |
854 | ||
855 | /* log if needed */ | |
856 | D1("Rx %d bytes", count); | |
857 | DUMP(ip_pkt, min(128, (int)count)); | |
858 | ||
859 | while (count) { | |
860 | switch (odev->rx_parse_state) { | |
861 | case WAIT_IP: | |
862 | /* waiting for IP header. */ | |
863 | /* wanted bytes - size of ip header */ | |
864 | temp_bytes = | |
865 | (count < | |
866 | odev->rx_buf_missing) ? count : odev-> | |
867 | rx_buf_missing; | |
868 | ||
869 | memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + | |
870 | odev->rx_buf_size, ip_pkt + buffer_offset, | |
871 | temp_bytes); | |
872 | ||
873 | odev->rx_buf_size += temp_bytes; | |
874 | buffer_offset += temp_bytes; | |
875 | odev->rx_buf_missing -= temp_bytes; | |
876 | count -= temp_bytes; | |
877 | ||
878 | if (!odev->rx_buf_missing) { | |
879 | /* header is complete allocate an sk_buffer and | |
880 | * continue to WAIT_DATA */ | |
881 | frame_len = ntohs(odev->rx_ip_hdr.tot_len); | |
882 | ||
883 | if ((frame_len > DEFAULT_MRU) || | |
884 | (frame_len < sizeof(struct iphdr))) { | |
885 | dev_err(&odev->net->dev, | |
886 | "Invalid frame (%d) length\n", | |
887 | frame_len); | |
888 | odev->rx_parse_state = WAIT_SYNC; | |
889 | continue; | |
890 | } | |
891 | /* Allocate an sk_buff */ | |
892 | odev->skb_rx_buf = dev_alloc_skb(frame_len); | |
893 | if (!odev->skb_rx_buf) { | |
894 | /* We got no receive buffer. */ | |
895 | D1("could not allocate memory"); | |
896 | odev->rx_parse_state = WAIT_SYNC; | |
897 | return; | |
898 | } | |
899 | /* Here's where it came from */ | |
900 | odev->skb_rx_buf->dev = odev->net; | |
901 | ||
902 | /* Copy what we got so far. make room for iphdr | |
903 | * after tail. */ | |
904 | tmp_rx_buf = | |
905 | skb_put(odev->skb_rx_buf, | |
906 | sizeof(struct iphdr)); | |
907 | memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr), | |
908 | sizeof(struct iphdr)); | |
909 | ||
910 | /* ETH_HLEN */ | |
911 | odev->rx_buf_size = sizeof(struct iphdr); | |
912 | ||
913 | /* Filip actually use .tot_len */ | |
914 | odev->rx_buf_missing = | |
915 | frame_len - sizeof(struct iphdr); | |
916 | odev->rx_parse_state = WAIT_DATA; | |
917 | } | |
918 | break; | |
919 | ||
920 | case WAIT_DATA: | |
921 | temp_bytes = (count < odev->rx_buf_missing) | |
922 | ? count : odev->rx_buf_missing; | |
923 | ||
924 | /* Copy the rest of the bytes that are left in the | |
925 | * buffer into the waiting sk_buf. */ | |
926 | /* Make room for temp_bytes after tail. */ | |
927 | tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes); | |
928 | memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes); | |
929 | ||
930 | odev->rx_buf_missing -= temp_bytes; | |
931 | count -= temp_bytes; | |
932 | buffer_offset += temp_bytes; | |
933 | odev->rx_buf_size += temp_bytes; | |
934 | if (!odev->rx_buf_missing) { | |
935 | /* Packet is complete. Inject into stack. */ | |
936 | /* We have IP packet here */ | |
937 | odev->skb_rx_buf->protocol = | |
938 | __constant_htons(ETH_P_IP); | |
939 | /* don't check it */ | |
940 | odev->skb_rx_buf->ip_summed = | |
941 | CHECKSUM_UNNECESSARY; | |
942 | ||
943 | skb_reset_mac_header(odev->skb_rx_buf); | |
944 | ||
945 | /* Ship it off to the kernel */ | |
946 | netif_rx(odev->skb_rx_buf); | |
947 | /* No longer our buffer. */ | |
948 | odev->skb_rx_buf = NULL; | |
949 | ||
950 | /* update out statistics */ | |
951 | odev->net->stats.rx_packets++; | |
952 | ||
953 | odev->net->stats.rx_bytes += odev->rx_buf_size; | |
954 | ||
955 | odev->rx_buf_size = 0; | |
956 | odev->rx_buf_missing = sizeof(struct iphdr); | |
957 | odev->rx_parse_state = WAIT_IP; | |
958 | } | |
959 | break; | |
960 | ||
961 | case WAIT_SYNC: | |
962 | D1(" W_S"); | |
963 | count = 0; | |
964 | break; | |
965 | default: | |
966 | D1(" "); | |
967 | count--; | |
968 | break; | |
969 | } | |
970 | } | |
971 | ||
972 | /* Recovery mechanism for WAIT_SYNC state. */ | |
973 | if (is_eop) { | |
974 | if (odev->rx_parse_state == WAIT_SYNC) { | |
975 | odev->rx_parse_state = WAIT_IP; | |
976 | odev->rx_buf_size = 0; | |
977 | odev->rx_buf_missing = sizeof(struct iphdr); | |
978 | } | |
979 | } | |
980 | } | |
981 | ||
982 | /* Moving data from usb to kernel (in interrupt state) */ | |
983 | static void read_bulk_callback(struct urb *urb) | |
984 | { | |
985 | struct hso_net *odev = urb->context; | |
986 | struct net_device *net; | |
987 | int result; | |
988 | int status = urb->status; | |
989 | ||
990 | /* is al ok? (Filip: Who's Al ?) */ | |
991 | if (status) { | |
992 | log_usb_status(status, __func__); | |
993 | return; | |
994 | } | |
995 | ||
996 | /* Sanity check */ | |
997 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
998 | D1("BULK IN callback but driver is not active!"); | |
999 | return; | |
1000 | } | |
1001 | usb_mark_last_busy(urb->dev); | |
1002 | ||
1003 | net = odev->net; | |
1004 | ||
1005 | if (!netif_device_present(net)) { | |
1006 | /* Somebody killed our network interface... */ | |
1007 | return; | |
1008 | } | |
1009 | ||
1010 | if (odev->parent->port_spec & HSO_INFO_CRC_BUG) { | |
1011 | u32 rest; | |
1012 | u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
1013 | rest = urb->actual_length % odev->in_endp->wMaxPacketSize; | |
1014 | if (((rest == 5) || (rest == 6)) | |
1015 | && !memcmp(((u8 *) urb->transfer_buffer) + | |
1016 | urb->actual_length - 4, crc_check, 4)) { | |
1017 | urb->actual_length -= 4; | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | /* do we even have a packet? */ | |
1022 | if (urb->actual_length) { | |
1023 | /* Handle the IP stream, add header and push it onto network | |
1024 | * stack if the packet is complete. */ | |
1025 | spin_lock(&odev->net_lock); | |
1026 | packetizeRx(odev, urb->transfer_buffer, urb->actual_length, | |
1027 | (urb->transfer_buffer_length > | |
1028 | urb->actual_length) ? 1 : 0); | |
1029 | spin_unlock(&odev->net_lock); | |
1030 | } | |
1031 | ||
1032 | /* We are done with this URB, resubmit it. Prep the USB to wait for | |
1033 | * another frame. Reuse same as received. */ | |
1034 | usb_fill_bulk_urb(urb, | |
1035 | odev->parent->usb, | |
1036 | usb_rcvbulkpipe(odev->parent->usb, | |
1037 | odev->in_endp-> | |
1038 | bEndpointAddress & 0x7F), | |
1039 | urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, | |
1040 | read_bulk_callback, odev); | |
1041 | ||
1042 | /* Give this to the USB subsystem so it can tell us when more data | |
1043 | * arrives. */ | |
1044 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1045 | if (result) | |
1046 | dev_warn(&odev->parent->interface->dev, | |
1047 | "%s failed submit mux_bulk_rx_urb %d", __func__, | |
1048 | result); | |
1049 | } | |
1050 | ||
1051 | /* Serial driver functions */ | |
1052 | ||
1053 | static void _hso_serial_set_termios(struct tty_struct *tty, | |
1054 | struct ktermios *old) | |
1055 | { | |
1056 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1057 | struct ktermios *termios; | |
1058 | ||
1059 | if ((!tty) || (!tty->termios) || (!serial)) { | |
1060 | printk(KERN_ERR "%s: no tty structures", __func__); | |
1061 | return; | |
1062 | } | |
1063 | ||
1064 | D4("port %d", serial->minor); | |
1065 | ||
1066 | /* | |
1067 | * The default requirements for this device are: | |
1068 | */ | |
1069 | termios = tty->termios; | |
1070 | termios->c_iflag &= | |
1071 | ~(IGNBRK /* disable ignore break */ | |
1072 | | BRKINT /* disable break causes interrupt */ | |
1073 | | PARMRK /* disable mark parity errors */ | |
1074 | | ISTRIP /* disable clear high bit of input characters */ | |
1075 | | INLCR /* disable translate NL to CR */ | |
1076 | | IGNCR /* disable ignore CR */ | |
1077 | | ICRNL /* disable translate CR to NL */ | |
1078 | | IXON); /* disable enable XON/XOFF flow control */ | |
1079 | ||
1080 | /* disable postprocess output characters */ | |
1081 | termios->c_oflag &= ~OPOST; | |
1082 | ||
1083 | termios->c_lflag &= | |
1084 | ~(ECHO /* disable echo input characters */ | |
1085 | | ECHONL /* disable echo new line */ | |
1086 | | ICANON /* disable erase, kill, werase, and rprnt | |
1087 | special characters */ | |
1088 | | ISIG /* disable interrupt, quit, and suspend special | |
1089 | characters */ | |
1090 | | IEXTEN); /* disable non-POSIX special characters */ | |
1091 | ||
1092 | termios->c_cflag &= | |
1093 | ~(CSIZE /* no size */ | |
1094 | | PARENB /* disable parity bit */ | |
1095 | | CBAUD /* clear current baud rate */ | |
1096 | | CBAUDEX); /* clear current buad rate */ | |
1097 | ||
1098 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1099 | ||
1100 | /* baud rate 115200 */ | |
1101 | tty_encode_baud_rate(serial->tty, 115200, 115200); | |
1102 | ||
1103 | /* | |
1104 | * Force low_latency on; otherwise the pushes are scheduled; | |
1105 | * this is bad as it opens up the possibility of dropping bytes | |
1106 | * on the floor. We don't want to drop bytes on the floor. :) | |
1107 | */ | |
1108 | serial->tty->low_latency = 1; | |
1109 | return; | |
1110 | } | |
1111 | ||
8ef5ba63 DJB |
1112 | static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb) |
1113 | { | |
1114 | int result; | |
1115 | #ifdef CONFIG_HSO_AUTOPM | |
1116 | usb_mark_last_busy(urb->dev); | |
1117 | #endif | |
1118 | /* We are done with this URB, resubmit it. Prep the USB to wait for | |
1119 | * another frame */ | |
1120 | usb_fill_bulk_urb(urb, serial->parent->usb, | |
1121 | usb_rcvbulkpipe(serial->parent->usb, | |
1122 | serial->in_endp-> | |
1123 | bEndpointAddress & 0x7F), | |
1124 | urb->transfer_buffer, serial->rx_data_length, | |
1125 | hso_std_serial_read_bulk_callback, serial); | |
1126 | /* Give this to the USB subsystem so it can tell us when more data | |
1127 | * arrives. */ | |
1128 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1129 | if (result) { | |
1130 | dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n", | |
1131 | __func__, result); | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | ||
1136 | ||
1137 | ||
1138 | static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial) | |
1139 | { | |
1140 | int count; | |
1141 | struct urb *curr_urb; | |
1142 | ||
1143 | while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) { | |
1144 | curr_urb = serial->rx_urb[serial->curr_rx_urb_idx]; | |
1145 | count = put_rxbuf_data(curr_urb, serial); | |
1146 | if (count == -1) | |
1147 | return; | |
1148 | if (count == 0) { | |
1149 | serial->curr_rx_urb_idx++; | |
1150 | if (serial->curr_rx_urb_idx >= serial->num_rx_urbs) | |
1151 | serial->curr_rx_urb_idx = 0; | |
1152 | hso_resubmit_rx_bulk_urb(serial, curr_urb); | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) | |
1158 | { | |
1159 | int count = 0; | |
1160 | struct urb *urb; | |
1161 | ||
1162 | urb = serial->rx_urb[0]; | |
1163 | if (serial->open_count > 0) { | |
1164 | count = put_rxbuf_data(urb, serial); | |
1165 | if (count == -1) | |
1166 | return; | |
1167 | } | |
1168 | /* Re issue a read as long as we receive data. */ | |
1169 | ||
1170 | if (count == 0 && ((urb->actual_length != 0) || | |
1171 | (serial->rx_state == RX_PENDING))) { | |
1172 | serial->rx_state = RX_SENT; | |
1173 | hso_mux_serial_read(serial); | |
1174 | } else | |
1175 | serial->rx_state = RX_IDLE; | |
1176 | } | |
1177 | ||
1178 | ||
1179 | /* read callback for Diag and CS port */ | |
1180 | static void hso_std_serial_read_bulk_callback(struct urb *urb) | |
1181 | { | |
1182 | struct hso_serial *serial = urb->context; | |
1183 | int status = urb->status; | |
1184 | ||
1185 | /* sanity check */ | |
1186 | if (!serial) { | |
1187 | D1("serial == NULL"); | |
1188 | return; | |
1189 | } else if (status) { | |
1190 | log_usb_status(status, __func__); | |
1191 | return; | |
1192 | } | |
1193 | ||
1194 | D4("\n--- Got serial_read_bulk callback %02x ---", status); | |
1195 | D1("Actual length = %d\n", urb->actual_length); | |
1196 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
1197 | ||
1198 | /* Anyone listening? */ | |
1199 | if (serial->open_count == 0) | |
1200 | return; | |
1201 | ||
1202 | if (status == 0) { | |
1203 | if (serial->parent->port_spec & HSO_INFO_CRC_BUG) { | |
1204 | u32 rest; | |
1205 | u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
1206 | rest = | |
1207 | urb->actual_length % | |
1208 | serial->in_endp->wMaxPacketSize; | |
1209 | if (((rest == 5) || (rest == 6)) | |
1210 | && !memcmp(((u8 *) urb->transfer_buffer) + | |
1211 | urb->actual_length - 4, crc_check, 4)) { | |
1212 | urb->actual_length -= 4; | |
1213 | } | |
1214 | } | |
1215 | /* Valid data, handle RX data */ | |
1216 | spin_lock(&serial->serial_lock); | |
1217 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; | |
1218 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1219 | spin_unlock(&serial->serial_lock); | |
1220 | } else if (status == -ENOENT || status == -ECONNRESET) { | |
1221 | /* Unlinked - check for throttled port. */ | |
1222 | D2("Port %d, successfully unlinked urb", serial->minor); | |
1223 | spin_lock(&serial->serial_lock); | |
1224 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; | |
1225 | hso_resubmit_rx_bulk_urb(serial, urb); | |
1226 | spin_unlock(&serial->serial_lock); | |
1227 | } else { | |
1228 | D2("Port %d, status = %d for read urb", serial->minor, status); | |
1229 | return; | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | /* | |
1234 | * This needs to be a tasklet otherwise we will | |
1235 | * end up recursively calling this function. | |
1236 | */ | |
1237 | void hso_unthrottle_tasklet(struct hso_serial *serial) | |
1238 | { | |
1239 | unsigned long flags; | |
1240 | ||
1241 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1242 | if ((serial->parent->port_spec & HSO_INTF_MUX)) | |
1243 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
1244 | else | |
1245 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1246 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1247 | } | |
1248 | ||
1249 | static void hso_unthrottle(struct tty_struct *tty) | |
1250 | { | |
1251 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1252 | ||
1253 | tasklet_hi_schedule(&serial->unthrottle_tasklet); | |
1254 | } | |
1255 | ||
1256 | void hso_unthrottle_workfunc(struct work_struct *work) | |
1257 | { | |
1258 | struct hso_serial *serial = | |
1259 | container_of(work, struct hso_serial, | |
1260 | retry_unthrottle_workqueue); | |
1261 | hso_unthrottle_tasklet(serial); | |
1262 | } | |
1263 | ||
72dc1c09 GKH |
1264 | /* open the requested serial port */ |
1265 | static int hso_serial_open(struct tty_struct *tty, struct file *filp) | |
1266 | { | |
1267 | struct hso_serial *serial = get_serial_by_index(tty->index); | |
52429eb2 DJB |
1268 | int result1 = 0, result2 = 0; |
1269 | struct mutex *hso_mutex = NULL; | |
1270 | int refcnt = 1; | |
72dc1c09 GKH |
1271 | |
1272 | /* sanity check */ | |
1273 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { | |
1274 | tty->driver_data = NULL; | |
1275 | D1("Failed to open port"); | |
1276 | return -ENODEV; | |
1277 | } | |
1278 | ||
52429eb2 DJB |
1279 | hso_mutex = &serial->parent->mutex->mutex; |
1280 | mutex_lock(hso_mutex); | |
4a3e8181 DJB |
1281 | /* check for port already opened, if not set the termios */ |
1282 | /* The serial->open count needs to be here as hso_serial_close | |
1283 | * will be called even if hso_serial_open returns -ENODEV. | |
1284 | */ | |
1285 | serial->open_count++; | |
52429eb2 DJB |
1286 | result1 = usb_autopm_get_interface(serial->parent->interface); |
1287 | if (result1 < 0) | |
72dc1c09 GKH |
1288 | goto err_out; |
1289 | ||
1290 | D1("Opening %d", serial->minor); | |
1291 | kref_get(&serial->parent->ref); | |
1292 | ||
1293 | /* setup */ | |
1294 | tty->driver_data = serial; | |
1295 | serial->tty = tty; | |
1296 | ||
72dc1c09 GKH |
1297 | if (serial->open_count == 1) { |
1298 | tty->low_latency = 1; | |
8ef5ba63 | 1299 | serial->rx_state = RX_IDLE; |
72dc1c09 GKH |
1300 | /* Force default termio settings */ |
1301 | _hso_serial_set_termios(tty, NULL); | |
8ef5ba63 DJB |
1302 | tasklet_init(&serial->unthrottle_tasklet, |
1303 | (void (*)(unsigned long))hso_unthrottle_tasklet, | |
1304 | (unsigned long)serial); | |
1305 | INIT_WORK(&serial->retry_unthrottle_workqueue, | |
1306 | hso_unthrottle_workfunc); | |
52429eb2 DJB |
1307 | result2 = hso_start_serial_device(serial->parent, GFP_KERNEL); |
1308 | if (result2) { | |
72dc1c09 GKH |
1309 | hso_stop_serial_device(serial->parent); |
1310 | serial->open_count--; | |
72dc1c09 GKH |
1311 | } |
1312 | } else { | |
1313 | D1("Port was already open"); | |
1314 | } | |
1315 | ||
1316 | usb_autopm_put_interface(serial->parent->interface); | |
1317 | ||
1318 | /* done */ | |
52429eb2 | 1319 | if (result1) |
72dc1c09 GKH |
1320 | hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0); |
1321 | err_out: | |
52429eb2 DJB |
1322 | if (result2) |
1323 | refcnt = kref_put(&serial->parent->ref, hso_serial_ref_free); | |
1324 | mutex_unlock(hso_mutex); | |
1325 | if (refcnt == 0) | |
1326 | hso_free_mutex(container_of(hso_mutex, | |
1327 | struct hso_mutex_t, mutex)); | |
1328 | return result1 == 0 ? result2 : result1; | |
72dc1c09 GKH |
1329 | } |
1330 | ||
1331 | /* close the requested serial port */ | |
1332 | static void hso_serial_close(struct tty_struct *tty, struct file *filp) | |
1333 | { | |
1334 | struct hso_serial *serial = tty->driver_data; | |
1335 | u8 usb_gone; | |
52429eb2 DJB |
1336 | struct mutex *hso_mutex; |
1337 | int refcnt; | |
72dc1c09 GKH |
1338 | |
1339 | D1("Closing serial port"); | |
4a3e8181 DJB |
1340 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { |
1341 | D1("invalid serial structure bailing out.\n"); | |
1342 | return; | |
1343 | } | |
72dc1c09 | 1344 | |
72dc1c09 | 1345 | usb_gone = serial->parent->usb_gone; |
52429eb2 DJB |
1346 | hso_mutex = &serial->parent->mutex->mutex; |
1347 | mutex_lock(hso_mutex); | |
72dc1c09 GKH |
1348 | |
1349 | if (!usb_gone) | |
1350 | usb_autopm_get_interface(serial->parent->interface); | |
1351 | ||
1352 | /* reset the rts and dtr */ | |
1353 | /* do the actual close */ | |
1354 | serial->open_count--; | |
1355 | if (serial->open_count <= 0) { | |
72dc1c09 GKH |
1356 | serial->open_count = 0; |
1357 | if (serial->tty) { | |
1358 | serial->tty->driver_data = NULL; | |
1359 | serial->tty = NULL; | |
1360 | } | |
1361 | if (!usb_gone) | |
1362 | hso_stop_serial_device(serial->parent); | |
8ef5ba63 DJB |
1363 | tasklet_kill(&serial->unthrottle_tasklet); |
1364 | cancel_work_sync(&serial->retry_unthrottle_workqueue); | |
72dc1c09 | 1365 | } |
8ef5ba63 | 1366 | |
72dc1c09 GKH |
1367 | if (!usb_gone) |
1368 | usb_autopm_put_interface(serial->parent->interface); | |
52429eb2 DJB |
1369 | refcnt = kref_put(&serial->parent->ref, hso_serial_ref_free); |
1370 | mutex_unlock(hso_mutex); | |
1371 | if (refcnt == 0) | |
1372 | hso_free_mutex(container_of(hso_mutex, | |
1373 | struct hso_mutex_t, mutex)); | |
72dc1c09 GKH |
1374 | } |
1375 | ||
1376 | /* close the requested serial port */ | |
1377 | static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, | |
1378 | int count) | |
1379 | { | |
1380 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1381 | int space, tx_bytes; | |
1382 | unsigned long flags; | |
1383 | ||
1384 | /* sanity check */ | |
1385 | if (serial == NULL) { | |
1386 | printk(KERN_ERR "%s: serial is NULL\n", __func__); | |
1387 | return -ENODEV; | |
1388 | } | |
1389 | ||
1390 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1391 | ||
1392 | space = serial->tx_data_length - serial->tx_buffer_count; | |
1393 | tx_bytes = (count < space) ? count : space; | |
1394 | ||
1395 | if (!tx_bytes) | |
1396 | goto out; | |
1397 | ||
1398 | memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); | |
1399 | serial->tx_buffer_count += tx_bytes; | |
1400 | ||
1401 | out: | |
1402 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1403 | ||
1404 | hso_kick_transmit(serial); | |
1405 | /* done */ | |
1406 | return tx_bytes; | |
1407 | } | |
1408 | ||
1409 | /* how much room is there for writing */ | |
1410 | static int hso_serial_write_room(struct tty_struct *tty) | |
1411 | { | |
1412 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1413 | int room; | |
1414 | unsigned long flags; | |
1415 | ||
1416 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1417 | room = serial->tx_data_length - serial->tx_buffer_count; | |
1418 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1419 | ||
1420 | /* return free room */ | |
1421 | return room; | |
1422 | } | |
1423 | ||
1424 | /* setup the term */ | |
1425 | static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) | |
1426 | { | |
1427 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1428 | unsigned long flags; | |
1429 | ||
1430 | if (old) | |
1431 | D5("Termios called with: cflags new[%d] - old[%d]", | |
1432 | tty->termios->c_cflag, old->c_cflag); | |
1433 | ||
1434 | /* the actual setup */ | |
1435 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1436 | if (serial->open_count) | |
1437 | _hso_serial_set_termios(tty, old); | |
1438 | else | |
1439 | tty->termios = old; | |
1440 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1441 | ||
1442 | /* done */ | |
1443 | return; | |
1444 | } | |
1445 | ||
1446 | /* how many characters in the buffer */ | |
1447 | static int hso_serial_chars_in_buffer(struct tty_struct *tty) | |
1448 | { | |
1449 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1450 | int chars; | |
1451 | unsigned long flags; | |
1452 | ||
1453 | /* sanity check */ | |
1454 | if (serial == NULL) | |
1455 | return 0; | |
1456 | ||
1457 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1458 | chars = serial->tx_buffer_count; | |
1459 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1460 | ||
1461 | return chars; | |
1462 | } | |
1463 | ||
1464 | static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file) | |
1465 | { | |
cd90ee17 | 1466 | unsigned int value; |
72dc1c09 | 1467 | struct hso_serial *serial = get_serial_by_tty(tty); |
cd90ee17 | 1468 | unsigned long flags; |
72dc1c09 GKH |
1469 | |
1470 | /* sanity check */ | |
1471 | if (!serial) { | |
1472 | D1("no tty structures"); | |
1473 | return -EINVAL; | |
1474 | } | |
cd90ee17 DM |
1475 | |
1476 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1477 | value = ((serial->rts_state) ? TIOCM_RTS : 0) | | |
72dc1c09 | 1478 | ((serial->dtr_state) ? TIOCM_DTR : 0); |
cd90ee17 | 1479 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
72dc1c09 | 1480 | |
cd90ee17 | 1481 | return value; |
72dc1c09 GKH |
1482 | } |
1483 | ||
1484 | static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, | |
1485 | unsigned int set, unsigned int clear) | |
1486 | { | |
1487 | int val = 0; | |
1488 | unsigned long flags; | |
1489 | int if_num; | |
1490 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1491 | ||
1492 | /* sanity check */ | |
1493 | if (!serial) { | |
1494 | D1("no tty structures"); | |
1495 | return -EINVAL; | |
1496 | } | |
1497 | if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; | |
1498 | ||
1499 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1500 | if (set & TIOCM_RTS) | |
1501 | serial->rts_state = 1; | |
1502 | if (set & TIOCM_DTR) | |
1503 | serial->dtr_state = 1; | |
1504 | ||
1505 | if (clear & TIOCM_RTS) | |
1506 | serial->rts_state = 0; | |
1507 | if (clear & TIOCM_DTR) | |
1508 | serial->dtr_state = 0; | |
1509 | ||
1510 | if (serial->dtr_state) | |
1511 | val |= 0x01; | |
1512 | if (serial->rts_state) | |
1513 | val |= 0x02; | |
1514 | ||
1515 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1516 | ||
1517 | return usb_control_msg(serial->parent->usb, | |
1518 | usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, | |
1519 | 0x21, val, if_num, NULL, 0, | |
1520 | USB_CTRL_SET_TIMEOUT); | |
1521 | } | |
1522 | ||
1523 | /* starts a transmit */ | |
1524 | static void hso_kick_transmit(struct hso_serial *serial) | |
1525 | { | |
1526 | u8 *temp; | |
1527 | unsigned long flags; | |
1528 | int res; | |
1529 | ||
1530 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1531 | if (!serial->tx_buffer_count) | |
1532 | goto out; | |
1533 | ||
1534 | if (serial->tx_urb_used) | |
1535 | goto out; | |
1536 | ||
1537 | /* Wakeup USB interface if necessary */ | |
1538 | if (hso_get_activity(serial->parent) == -EAGAIN) | |
1539 | goto out; | |
1540 | ||
1541 | /* Switch pointers around to avoid memcpy */ | |
1542 | temp = serial->tx_buffer; | |
1543 | serial->tx_buffer = serial->tx_data; | |
1544 | serial->tx_data = temp; | |
1545 | serial->tx_data_count = serial->tx_buffer_count; | |
1546 | serial->tx_buffer_count = 0; | |
1547 | ||
1548 | /* If temp is set, it means we switched buffers */ | |
1549 | if (temp && serial->write_data) { | |
1550 | res = serial->write_data(serial); | |
1551 | if (res >= 0) | |
1552 | serial->tx_urb_used = 1; | |
1553 | } | |
1554 | out: | |
1555 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1556 | } | |
1557 | ||
1558 | /* make a request (for reading and writing data to muxed serial port) */ | |
1559 | static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, | |
1560 | struct urb *ctrl_urb, | |
1561 | struct usb_ctrlrequest *ctrl_req, | |
1562 | u8 *ctrl_urb_data, u32 size) | |
1563 | { | |
1564 | int result; | |
1565 | int pipe; | |
1566 | ||
1567 | /* Sanity check */ | |
1568 | if (!serial || !ctrl_urb || !ctrl_req) { | |
1569 | printk(KERN_ERR "%s: Wrong arguments\n", __func__); | |
1570 | return -EINVAL; | |
1571 | } | |
1572 | ||
1573 | /* initialize */ | |
1574 | ctrl_req->wValue = 0; | |
1575 | ctrl_req->wIndex = hso_port_to_mux(port); | |
1576 | ctrl_req->wLength = size; | |
1577 | ||
1578 | if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { | |
1579 | /* Reading command */ | |
1580 | ctrl_req->bRequestType = USB_DIR_IN | | |
1581 | USB_TYPE_OPTION_VENDOR | | |
1582 | USB_RECIP_INTERFACE; | |
1583 | ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; | |
1584 | pipe = usb_rcvctrlpipe(serial->parent->usb, 0); | |
1585 | } else { | |
1586 | /* Writing command */ | |
1587 | ctrl_req->bRequestType = USB_DIR_OUT | | |
1588 | USB_TYPE_OPTION_VENDOR | | |
1589 | USB_RECIP_INTERFACE; | |
1590 | ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; | |
1591 | pipe = usb_sndctrlpipe(serial->parent->usb, 0); | |
1592 | } | |
1593 | /* syslog */ | |
1594 | D2("%s command (%02x) len: %d, port: %d", | |
1595 | type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", | |
1596 | ctrl_req->bRequestType, ctrl_req->wLength, port); | |
1597 | ||
1598 | /* Load ctrl urb */ | |
1599 | ctrl_urb->transfer_flags = 0; | |
1600 | usb_fill_control_urb(ctrl_urb, | |
1601 | serial->parent->usb, | |
1602 | pipe, | |
1603 | (u8 *) ctrl_req, | |
1604 | ctrl_urb_data, size, ctrl_callback, serial); | |
1605 | /* Send it on merry way */ | |
1606 | result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); | |
1607 | if (result) { | |
1608 | dev_err(&ctrl_urb->dev->dev, | |
1609 | "%s failed submit ctrl_urb %d type %d", __func__, | |
1610 | result, type); | |
1611 | return result; | |
1612 | } | |
1613 | ||
1614 | /* done */ | |
1615 | return size; | |
1616 | } | |
1617 | ||
1618 | /* called by intr_callback when read occurs */ | |
1619 | static int hso_mux_serial_read(struct hso_serial *serial) | |
1620 | { | |
1621 | if (!serial) | |
1622 | return -EINVAL; | |
1623 | ||
1624 | /* clean data */ | |
1625 | memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); | |
1626 | /* make the request */ | |
1627 | ||
1628 | if (serial->num_rx_urbs != 1) { | |
1629 | dev_err(&serial->parent->interface->dev, | |
1630 | "ERROR: mux'd reads with multiple buffers " | |
1631 | "not possible\n"); | |
1632 | return 0; | |
1633 | } | |
1634 | return mux_device_request(serial, | |
1635 | USB_CDC_GET_ENCAPSULATED_RESPONSE, | |
1636 | serial->parent->port_spec & HSO_PORT_MASK, | |
1637 | serial->rx_urb[0], | |
1638 | &serial->ctrl_req_rx, | |
1639 | serial->rx_data[0], serial->rx_data_length); | |
1640 | } | |
1641 | ||
1642 | /* used for muxed serial port callback (muxed serial read) */ | |
1643 | static void intr_callback(struct urb *urb) | |
1644 | { | |
1645 | struct hso_shared_int *shared_int = urb->context; | |
1646 | struct hso_serial *serial; | |
1647 | unsigned char *port_req; | |
1648 | int status = urb->status; | |
1649 | int i; | |
1650 | ||
1651 | usb_mark_last_busy(urb->dev); | |
1652 | ||
1653 | /* sanity check */ | |
1654 | if (!shared_int) | |
1655 | return; | |
1656 | ||
1657 | /* status check */ | |
1658 | if (status) { | |
1659 | log_usb_status(status, __func__); | |
1660 | return; | |
1661 | } | |
1662 | D4("\n--- Got intr callback 0x%02X ---", status); | |
1663 | ||
1664 | /* what request? */ | |
1665 | port_req = urb->transfer_buffer; | |
1666 | D4(" port_req = 0x%.2X\n", *port_req); | |
1667 | /* loop over all muxed ports to find the one sending this */ | |
1668 | for (i = 0; i < 8; i++) { | |
1669 | /* max 8 channels on MUX */ | |
1670 | if (*port_req & (1 << i)) { | |
1671 | serial = get_serial_by_shared_int_and_type(shared_int, | |
1672 | (1 << i)); | |
1673 | if (serial != NULL) { | |
1674 | D1("Pending read interrupt on port %d\n", i); | |
8ef5ba63 DJB |
1675 | spin_lock(&serial->serial_lock); |
1676 | if (serial->rx_state == RX_IDLE) { | |
72dc1c09 GKH |
1677 | /* Setup and send a ctrl req read on |
1678 | * port i */ | |
8ef5ba63 DJB |
1679 | if (!serial->rx_urb_filled[0]) { |
1680 | serial->rx_state = RX_SENT; | |
1681 | hso_mux_serial_read(serial); | |
1682 | } else | |
1683 | serial->rx_state = RX_PENDING; | |
1684 | ||
72dc1c09 GKH |
1685 | } else { |
1686 | D1("Already pending a read on " | |
1687 | "port %d\n", i); | |
1688 | } | |
8ef5ba63 | 1689 | spin_unlock(&serial->serial_lock); |
72dc1c09 GKH |
1690 | } |
1691 | } | |
1692 | } | |
1693 | /* Resubmit interrupt urb */ | |
1694 | hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); | |
1695 | } | |
1696 | ||
1697 | /* called for writing to muxed serial port */ | |
1698 | static int hso_mux_serial_write_data(struct hso_serial *serial) | |
1699 | { | |
1700 | if (NULL == serial) | |
1701 | return -EINVAL; | |
1702 | ||
1703 | return mux_device_request(serial, | |
1704 | USB_CDC_SEND_ENCAPSULATED_COMMAND, | |
1705 | serial->parent->port_spec & HSO_PORT_MASK, | |
1706 | serial->tx_urb, | |
1707 | &serial->ctrl_req_tx, | |
1708 | serial->tx_data, serial->tx_data_count); | |
1709 | } | |
1710 | ||
1711 | /* write callback for Diag and CS port */ | |
1712 | static void hso_std_serial_write_bulk_callback(struct urb *urb) | |
1713 | { | |
1714 | struct hso_serial *serial = urb->context; | |
1715 | int status = urb->status; | |
1716 | ||
1717 | /* sanity check */ | |
1718 | if (!serial) { | |
1719 | D1("serial == NULL"); | |
1720 | return; | |
1721 | } | |
1722 | ||
1723 | spin_lock(&serial->serial_lock); | |
1724 | serial->tx_urb_used = 0; | |
1725 | spin_unlock(&serial->serial_lock); | |
1726 | if (status) { | |
1727 | log_usb_status(status, __func__); | |
1728 | return; | |
1729 | } | |
1730 | hso_put_activity(serial->parent); | |
add477df OB |
1731 | if (serial->tty) |
1732 | tty_wakeup(serial->tty); | |
72dc1c09 GKH |
1733 | hso_kick_transmit(serial); |
1734 | ||
1735 | D1(" "); | |
1736 | return; | |
1737 | } | |
1738 | ||
1739 | /* called for writing diag or CS serial port */ | |
1740 | static int hso_std_serial_write_data(struct hso_serial *serial) | |
1741 | { | |
1742 | int count = serial->tx_data_count; | |
1743 | int result; | |
1744 | ||
1745 | usb_fill_bulk_urb(serial->tx_urb, | |
1746 | serial->parent->usb, | |
1747 | usb_sndbulkpipe(serial->parent->usb, | |
1748 | serial->out_endp-> | |
1749 | bEndpointAddress & 0x7F), | |
1750 | serial->tx_data, serial->tx_data_count, | |
1751 | hso_std_serial_write_bulk_callback, serial); | |
1752 | ||
1753 | result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); | |
1754 | if (result) { | |
1755 | dev_warn(&serial->parent->usb->dev, | |
1756 | "Failed to submit urb - res %d\n", result); | |
1757 | return result; | |
1758 | } | |
1759 | ||
1760 | return count; | |
1761 | } | |
1762 | ||
1763 | /* callback after read or write on muxed serial port */ | |
1764 | static void ctrl_callback(struct urb *urb) | |
1765 | { | |
1766 | struct hso_serial *serial = urb->context; | |
1767 | struct usb_ctrlrequest *req; | |
1768 | int status = urb->status; | |
1769 | ||
1770 | /* sanity check */ | |
1771 | if (!serial) | |
1772 | return; | |
1773 | ||
1774 | spin_lock(&serial->serial_lock); | |
1775 | serial->tx_urb_used = 0; | |
1776 | spin_unlock(&serial->serial_lock); | |
1777 | if (status) { | |
1778 | log_usb_status(status, __func__); | |
1779 | return; | |
1780 | } | |
1781 | ||
1782 | /* what request? */ | |
1783 | req = (struct usb_ctrlrequest *)(urb->setup_packet); | |
1784 | D4("\n--- Got muxed ctrl callback 0x%02X ---", status); | |
1785 | D4("Actual length of urb = %d\n", urb->actual_length); | |
1786 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
1787 | ||
1788 | if (req->bRequestType == | |
1789 | (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { | |
1790 | /* response to a read command */ | |
8ef5ba63 DJB |
1791 | serial->rx_urb_filled[0] = 1; |
1792 | spin_lock(&serial->serial_lock); | |
1793 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
1794 | spin_unlock(&serial->serial_lock); | |
72dc1c09 GKH |
1795 | } else { |
1796 | hso_put_activity(serial->parent); | |
add477df OB |
1797 | if (serial->tty) |
1798 | tty_wakeup(serial->tty); | |
72dc1c09 GKH |
1799 | /* response to a write command */ |
1800 | hso_kick_transmit(serial); | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | /* handle RX data for serial port */ | |
8ef5ba63 | 1805 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) |
72dc1c09 GKH |
1806 | { |
1807 | struct tty_struct *tty = serial->tty; | |
8ef5ba63 DJB |
1808 | int write_length_remaining = 0; |
1809 | int curr_write_len; | |
72dc1c09 GKH |
1810 | /* Sanity check */ |
1811 | if (urb == NULL || serial == NULL) { | |
1812 | D1("serial = NULL"); | |
8ef5ba63 | 1813 | return -2; |
72dc1c09 GKH |
1814 | } |
1815 | ||
1816 | /* Push data to tty */ | |
8ef5ba63 DJB |
1817 | if (tty) { |
1818 | write_length_remaining = urb->actual_length - | |
1819 | serial->curr_rx_urb_offset; | |
72dc1c09 | 1820 | D1("data to push to tty"); |
8ef5ba63 DJB |
1821 | while (write_length_remaining) { |
1822 | if (test_bit(TTY_THROTTLED, &tty->flags)) | |
1823 | return -1; | |
1824 | curr_write_len = tty_insert_flip_string | |
1825 | (tty, urb->transfer_buffer + | |
1826 | serial->curr_rx_urb_offset, | |
1827 | write_length_remaining); | |
1828 | serial->curr_rx_urb_offset += curr_write_len; | |
1829 | write_length_remaining -= curr_write_len; | |
1830 | tty_flip_buffer_push(tty); | |
72dc1c09 | 1831 | } |
72dc1c09 | 1832 | } |
8ef5ba63 DJB |
1833 | if (write_length_remaining == 0) { |
1834 | serial->curr_rx_urb_offset = 0; | |
1835 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; | |
72dc1c09 | 1836 | } |
8ef5ba63 | 1837 | return write_length_remaining; |
72dc1c09 GKH |
1838 | } |
1839 | ||
8ef5ba63 | 1840 | |
72dc1c09 GKH |
1841 | /* Base driver functions */ |
1842 | ||
1843 | static void hso_log_port(struct hso_device *hso_dev) | |
1844 | { | |
1845 | char *port_type; | |
1846 | char port_dev[20]; | |
1847 | ||
1848 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
1849 | case HSO_PORT_CONTROL: | |
1850 | port_type = "Control"; | |
1851 | break; | |
1852 | case HSO_PORT_APP: | |
1853 | port_type = "Application"; | |
1854 | break; | |
1855 | case HSO_PORT_GPS: | |
1856 | port_type = "GPS"; | |
1857 | break; | |
1858 | case HSO_PORT_GPS_CONTROL: | |
1859 | port_type = "GPS control"; | |
1860 | break; | |
1861 | case HSO_PORT_APP2: | |
1862 | port_type = "Application2"; | |
1863 | break; | |
1864 | case HSO_PORT_PCSC: | |
1865 | port_type = "PCSC"; | |
1866 | break; | |
1867 | case HSO_PORT_DIAG: | |
1868 | port_type = "Diagnostic"; | |
1869 | break; | |
1870 | case HSO_PORT_DIAG2: | |
1871 | port_type = "Diagnostic2"; | |
1872 | break; | |
1873 | case HSO_PORT_MODEM: | |
1874 | port_type = "Modem"; | |
1875 | break; | |
1876 | case HSO_PORT_NETWORK: | |
1877 | port_type = "Network"; | |
1878 | break; | |
1879 | default: | |
1880 | port_type = "Unknown"; | |
1881 | break; | |
1882 | } | |
1883 | if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
1884 | sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); | |
1885 | } else | |
1886 | sprintf(port_dev, "/dev/%s%d", tty_filename, | |
1887 | dev2ser(hso_dev)->minor); | |
1888 | ||
1889 | dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", | |
1890 | port_type, port_dev); | |
1891 | } | |
1892 | ||
1893 | static int hso_start_net_device(struct hso_device *hso_dev) | |
1894 | { | |
1895 | int i, result = 0; | |
1896 | struct hso_net *hso_net = dev2net(hso_dev); | |
1897 | ||
1898 | if (!hso_net) | |
1899 | return -ENODEV; | |
1900 | ||
1901 | /* send URBs for all read buffers */ | |
1902 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
1903 | ||
1904 | /* Prep a receive URB */ | |
1905 | usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
1906 | hso_dev->usb, | |
1907 | usb_rcvbulkpipe(hso_dev->usb, | |
1908 | hso_net->in_endp-> | |
1909 | bEndpointAddress & 0x7F), | |
1910 | hso_net->mux_bulk_rx_buf_pool[i], | |
1911 | MUX_BULK_RX_BUF_SIZE, read_bulk_callback, | |
1912 | hso_net); | |
1913 | ||
1914 | /* Put it out there so the device can send us stuff */ | |
1915 | result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
1916 | GFP_NOIO); | |
1917 | if (result) | |
1918 | dev_warn(&hso_dev->usb->dev, | |
1919 | "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, | |
1920 | i, result); | |
1921 | } | |
1922 | ||
1923 | return result; | |
1924 | } | |
1925 | ||
1926 | static int hso_stop_net_device(struct hso_device *hso_dev) | |
1927 | { | |
1928 | int i; | |
1929 | struct hso_net *hso_net = dev2net(hso_dev); | |
1930 | ||
1931 | if (!hso_net) | |
1932 | return -ENODEV; | |
1933 | ||
1934 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
1935 | if (hso_net->mux_bulk_rx_urb_pool[i]) | |
1936 | usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
1937 | ||
1938 | } | |
1939 | if (hso_net->mux_bulk_tx_urb) | |
1940 | usb_kill_urb(hso_net->mux_bulk_tx_urb); | |
1941 | ||
1942 | return 0; | |
1943 | } | |
1944 | ||
1945 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) | |
1946 | { | |
1947 | int i, result = 0; | |
1948 | struct hso_serial *serial = dev2ser(hso_dev); | |
1949 | ||
1950 | if (!serial) | |
1951 | return -ENODEV; | |
1952 | ||
1953 | /* If it is not the MUX port fill in and submit a bulk urb (already | |
1954 | * allocated in hso_serial_start) */ | |
1955 | if (!(serial->parent->port_spec & HSO_INTF_MUX)) { | |
1956 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
1957 | usb_fill_bulk_urb(serial->rx_urb[i], | |
1958 | serial->parent->usb, | |
1959 | usb_rcvbulkpipe(serial->parent->usb, | |
1960 | serial->in_endp-> | |
1961 | bEndpointAddress & | |
1962 | 0x7F), | |
1963 | serial->rx_data[i], | |
1964 | serial->rx_data_length, | |
1965 | hso_std_serial_read_bulk_callback, | |
1966 | serial); | |
1967 | result = usb_submit_urb(serial->rx_urb[i], flags); | |
1968 | if (result) { | |
1969 | dev_warn(&serial->parent->usb->dev, | |
1970 | "Failed to submit urb - res %d\n", | |
1971 | result); | |
1972 | break; | |
1973 | } | |
1974 | } | |
1975 | } else { | |
1976 | mutex_lock(&serial->shared_int->shared_int_lock); | |
1977 | if (!serial->shared_int->use_count) { | |
1978 | result = | |
1979 | hso_mux_submit_intr_urb(serial->shared_int, | |
1980 | hso_dev->usb, flags); | |
1981 | } | |
1982 | serial->shared_int->use_count++; | |
1983 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
1984 | } | |
cd90ee17 | 1985 | |
72dc1c09 GKH |
1986 | return result; |
1987 | } | |
1988 | ||
1989 | static int hso_stop_serial_device(struct hso_device *hso_dev) | |
1990 | { | |
1991 | int i; | |
1992 | struct hso_serial *serial = dev2ser(hso_dev); | |
1993 | ||
1994 | if (!serial) | |
1995 | return -ENODEV; | |
1996 | ||
1997 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
8ef5ba63 | 1998 | if (serial->rx_urb[i]) { |
72dc1c09 | 1999 | usb_kill_urb(serial->rx_urb[i]); |
8ef5ba63 DJB |
2000 | serial->rx_urb_filled[i] = 0; |
2001 | } | |
72dc1c09 | 2002 | } |
8ef5ba63 DJB |
2003 | serial->curr_rx_urb_idx = 0; |
2004 | serial->curr_rx_urb_offset = 0; | |
72dc1c09 GKH |
2005 | |
2006 | if (serial->tx_urb) | |
2007 | usb_kill_urb(serial->tx_urb); | |
2008 | ||
2009 | if (serial->shared_int) { | |
2010 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2011 | if (serial->shared_int->use_count && | |
2012 | (--serial->shared_int->use_count == 0)) { | |
2013 | struct urb *urb; | |
2014 | ||
2015 | urb = serial->shared_int->shared_intr_urb; | |
2016 | if (urb) | |
2017 | usb_kill_urb(urb); | |
2018 | } | |
2019 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2020 | } | |
2021 | ||
2022 | return 0; | |
2023 | } | |
2024 | ||
2025 | static void hso_serial_common_free(struct hso_serial *serial) | |
2026 | { | |
2027 | int i; | |
2028 | ||
2029 | if (serial->parent->dev) | |
2030 | device_remove_file(serial->parent->dev, &dev_attr_hsotype); | |
2031 | ||
2032 | tty_unregister_device(tty_drv, serial->minor); | |
2033 | ||
2034 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2035 | /* unlink and free RX URB */ | |
2036 | usb_free_urb(serial->rx_urb[i]); | |
2037 | /* free the RX buffer */ | |
2038 | kfree(serial->rx_data[i]); | |
2039 | } | |
2040 | ||
2041 | /* unlink and free TX URB */ | |
2042 | usb_free_urb(serial->tx_urb); | |
2043 | kfree(serial->tx_data); | |
2044 | } | |
2045 | ||
2046 | static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, | |
2047 | int rx_size, int tx_size) | |
2048 | { | |
2049 | struct device *dev; | |
2050 | int minor; | |
2051 | int i; | |
2052 | ||
2053 | minor = get_free_serial_index(); | |
2054 | if (minor < 0) | |
2055 | goto exit; | |
2056 | ||
2057 | /* register our minor number */ | |
2058 | serial->parent->dev = tty_register_device(tty_drv, minor, | |
2059 | &serial->parent->interface->dev); | |
2060 | dev = serial->parent->dev; | |
2061 | dev->driver_data = serial->parent; | |
2062 | i = device_create_file(dev, &dev_attr_hsotype); | |
2063 | ||
2064 | /* fill in specific data for later use */ | |
2065 | serial->minor = minor; | |
2066 | serial->magic = HSO_SERIAL_MAGIC; | |
2067 | spin_lock_init(&serial->serial_lock); | |
2068 | serial->num_rx_urbs = num_urbs; | |
2069 | ||
2070 | /* RX, allocate urb and initialize */ | |
2071 | ||
2072 | /* prepare our RX buffer */ | |
2073 | serial->rx_data_length = rx_size; | |
2074 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2075 | serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2076 | if (!serial->rx_urb[i]) { | |
2077 | dev_err(dev, "Could not allocate urb?\n"); | |
2078 | goto exit; | |
2079 | } | |
2080 | serial->rx_urb[i]->transfer_buffer = NULL; | |
2081 | serial->rx_urb[i]->transfer_buffer_length = 0; | |
2082 | serial->rx_data[i] = kzalloc(serial->rx_data_length, | |
2083 | GFP_KERNEL); | |
2084 | if (!serial->rx_data[i]) { | |
2085 | dev_err(dev, "%s - Out of memory\n", __func__); | |
2086 | goto exit; | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | /* TX, allocate urb and initialize */ | |
2091 | serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2092 | if (!serial->tx_urb) { | |
2093 | dev_err(dev, "Could not allocate urb?\n"); | |
2094 | goto exit; | |
2095 | } | |
2096 | serial->tx_urb->transfer_buffer = NULL; | |
2097 | serial->tx_urb->transfer_buffer_length = 0; | |
2098 | /* prepare our TX buffer */ | |
2099 | serial->tx_data_count = 0; | |
2100 | serial->tx_buffer_count = 0; | |
2101 | serial->tx_data_length = tx_size; | |
2102 | serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
2103 | if (!serial->tx_data) { | |
2104 | dev_err(dev, "%s - Out of memory", __func__); | |
2105 | goto exit; | |
2106 | } | |
2107 | serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
2108 | if (!serial->tx_buffer) { | |
2109 | dev_err(dev, "%s - Out of memory", __func__); | |
2110 | goto exit; | |
2111 | } | |
2112 | ||
2113 | return 0; | |
2114 | exit: | |
2115 | hso_serial_common_free(serial); | |
2116 | return -1; | |
2117 | } | |
2118 | ||
2119 | /* Frees a general hso device */ | |
2120 | static void hso_free_device(struct hso_device *hso_dev) | |
2121 | { | |
2122 | kfree(hso_dev); | |
2123 | } | |
2124 | ||
2125 | /* Creates a general hso device */ | |
2126 | static struct hso_device *hso_create_device(struct usb_interface *intf, | |
2127 | int port_spec) | |
2128 | { | |
2129 | struct hso_device *hso_dev; | |
2130 | ||
2131 | hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); | |
2132 | if (!hso_dev) | |
2133 | return NULL; | |
2134 | ||
2135 | hso_dev->port_spec = port_spec; | |
2136 | hso_dev->usb = interface_to_usbdev(intf); | |
2137 | hso_dev->interface = intf; | |
2138 | kref_init(&hso_dev->ref); | |
52429eb2 DJB |
2139 | hso_dev->mutex = hso_get_free_mutex(); |
2140 | if (!hso_dev->mutex) { | |
2141 | kfree(hso_dev); | |
2142 | return NULL; | |
2143 | } | |
2144 | mutex_init(&hso_dev->mutex->mutex); | |
72dc1c09 GKH |
2145 | INIT_WORK(&hso_dev->async_get_intf, async_get_intf); |
2146 | INIT_WORK(&hso_dev->async_put_intf, async_put_intf); | |
2147 | ||
2148 | return hso_dev; | |
2149 | } | |
2150 | ||
2151 | /* Removes a network device in the network device table */ | |
2152 | static int remove_net_device(struct hso_device *hso_dev) | |
2153 | { | |
2154 | int i; | |
2155 | ||
2156 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2157 | if (network_table[i] == hso_dev) { | |
2158 | network_table[i] = NULL; | |
2159 | break; | |
2160 | } | |
2161 | } | |
2162 | if (i == HSO_MAX_NET_DEVICES) | |
2163 | return -1; | |
2164 | return 0; | |
2165 | } | |
2166 | ||
2167 | /* Frees our network device */ | |
2168 | static void hso_free_net_device(struct hso_device *hso_dev) | |
2169 | { | |
2170 | int i; | |
2171 | struct hso_net *hso_net = dev2net(hso_dev); | |
2172 | ||
2173 | if (!hso_net) | |
2174 | return; | |
2175 | ||
2176 | /* start freeing */ | |
2177 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2178 | usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2179 | kfree(hso_net->mux_bulk_rx_buf_pool[i]); | |
2180 | } | |
2181 | usb_free_urb(hso_net->mux_bulk_tx_urb); | |
2182 | kfree(hso_net->mux_bulk_tx_buf); | |
2183 | ||
2184 | remove_net_device(hso_net->parent); | |
2185 | ||
2186 | if (hso_net->net) { | |
2187 | unregister_netdev(hso_net->net); | |
2188 | free_netdev(hso_net->net); | |
2189 | } | |
52429eb2 | 2190 | hso_free_mutex(hso_dev->mutex); |
72dc1c09 GKH |
2191 | hso_free_device(hso_dev); |
2192 | } | |
2193 | ||
2194 | /* initialize the network interface */ | |
2195 | static void hso_net_init(struct net_device *net) | |
2196 | { | |
2197 | struct hso_net *hso_net = netdev_priv(net); | |
2198 | ||
2199 | D1("sizeof hso_net is %d", (int)sizeof(*hso_net)); | |
2200 | ||
2201 | /* fill in the other fields */ | |
2202 | net->open = hso_net_open; | |
2203 | net->stop = hso_net_close; | |
2204 | net->hard_start_xmit = hso_net_start_xmit; | |
2205 | net->tx_timeout = hso_net_tx_timeout; | |
2206 | net->watchdog_timeo = HSO_NET_TX_TIMEOUT; | |
2207 | net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; | |
2208 | net->type = ARPHRD_NONE; | |
2209 | net->mtu = DEFAULT_MTU - 14; | |
2210 | net->tx_queue_len = 10; | |
2211 | SET_ETHTOOL_OPS(net, &ops); | |
2212 | ||
2213 | /* and initialize the semaphore */ | |
2214 | spin_lock_init(&hso_net->net_lock); | |
2215 | } | |
2216 | ||
2217 | /* Adds a network device in the network device table */ | |
2218 | static int add_net_device(struct hso_device *hso_dev) | |
2219 | { | |
2220 | int i; | |
2221 | ||
2222 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2223 | if (network_table[i] == NULL) { | |
2224 | network_table[i] = hso_dev; | |
2225 | break; | |
2226 | } | |
2227 | } | |
2228 | if (i == HSO_MAX_NET_DEVICES) | |
2229 | return -1; | |
2230 | return 0; | |
2231 | } | |
2232 | ||
2233 | static int hso_radio_toggle(void *data, enum rfkill_state state) | |
2234 | { | |
2235 | struct hso_device *hso_dev = data; | |
2236 | int enabled = (state == RFKILL_STATE_ON); | |
2237 | int rv; | |
2238 | ||
52429eb2 | 2239 | mutex_lock(&hso_dev->mutex->mutex); |
72dc1c09 GKH |
2240 | if (hso_dev->usb_gone) |
2241 | rv = 0; | |
2242 | else | |
2243 | rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), | |
2244 | enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, | |
2245 | USB_CTRL_SET_TIMEOUT); | |
52429eb2 | 2246 | mutex_unlock(&hso_dev->mutex->mutex); |
72dc1c09 GKH |
2247 | return rv; |
2248 | } | |
2249 | ||
2250 | /* Creates and sets up everything for rfkill */ | |
2251 | static void hso_create_rfkill(struct hso_device *hso_dev, | |
2252 | struct usb_interface *interface) | |
2253 | { | |
2254 | struct hso_net *hso_net = dev2net(hso_dev); | |
939a9516 | 2255 | struct device *dev = &hso_net->net->dev; |
72dc1c09 GKH |
2256 | char *rfkn; |
2257 | ||
2258 | hso_net->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev, | |
db053c6b | 2259 | RFKILL_TYPE_WWAN); |
72dc1c09 | 2260 | if (!hso_net->rfkill) { |
939a9516 | 2261 | dev_err(dev, "%s - Out of memory\n", __func__); |
72dc1c09 GKH |
2262 | return; |
2263 | } | |
2264 | rfkn = kzalloc(20, GFP_KERNEL); | |
2265 | if (!rfkn) { | |
2266 | rfkill_free(hso_net->rfkill); | |
939a9516 JM |
2267 | hso_net->rfkill = NULL; |
2268 | dev_err(dev, "%s - Out of memory\n", __func__); | |
72dc1c09 GKH |
2269 | return; |
2270 | } | |
2271 | snprintf(rfkn, 20, "hso-%d", | |
2272 | interface->altsetting->desc.bInterfaceNumber); | |
2273 | hso_net->rfkill->name = rfkn; | |
2274 | hso_net->rfkill->state = RFKILL_STATE_ON; | |
2275 | hso_net->rfkill->data = hso_dev; | |
2276 | hso_net->rfkill->toggle_radio = hso_radio_toggle; | |
2277 | if (rfkill_register(hso_net->rfkill) < 0) { | |
2278 | kfree(rfkn); | |
2279 | hso_net->rfkill->name = NULL; | |
2280 | rfkill_free(hso_net->rfkill); | |
939a9516 JM |
2281 | hso_net->rfkill = NULL; |
2282 | dev_err(dev, "%s - Failed to register rfkill\n", __func__); | |
72dc1c09 GKH |
2283 | return; |
2284 | } | |
2285 | } | |
2286 | ||
2287 | /* Creates our network device */ | |
2288 | static struct hso_device *hso_create_net_device(struct usb_interface *interface) | |
2289 | { | |
2290 | int result, i; | |
2291 | struct net_device *net; | |
2292 | struct hso_net *hso_net; | |
2293 | struct hso_device *hso_dev; | |
2294 | ||
2295 | hso_dev = hso_create_device(interface, HSO_INTF_MUX | HSO_PORT_NETWORK); | |
2296 | if (!hso_dev) | |
2297 | return NULL; | |
2298 | ||
2299 | /* allocate our network device, then we can put in our private data */ | |
2300 | /* call hso_net_init to do the basic initialization */ | |
2301 | net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init); | |
2302 | if (!net) { | |
2303 | dev_err(&interface->dev, "Unable to create ethernet device\n"); | |
2304 | goto exit; | |
2305 | } | |
2306 | ||
2307 | hso_net = netdev_priv(net); | |
2308 | ||
2309 | hso_dev->port_data.dev_net = hso_net; | |
2310 | hso_net->net = net; | |
2311 | hso_net->parent = hso_dev; | |
2312 | ||
2313 | hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2314 | USB_DIR_IN); | |
2315 | if (!hso_net->in_endp) { | |
2316 | dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); | |
2317 | goto exit; | |
2318 | } | |
2319 | hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2320 | USB_DIR_OUT); | |
2321 | if (!hso_net->out_endp) { | |
2322 | dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); | |
2323 | goto exit; | |
2324 | } | |
2325 | SET_NETDEV_DEV(net, &interface->dev); | |
2326 | ||
2327 | /* registering our net device */ | |
2328 | result = register_netdev(net); | |
2329 | if (result) { | |
2330 | dev_err(&interface->dev, "Failed to register device\n"); | |
2331 | goto exit; | |
2332 | } | |
2333 | ||
2334 | /* start allocating */ | |
2335 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2336 | hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2337 | if (!hso_net->mux_bulk_rx_urb_pool[i]) { | |
2338 | dev_err(&interface->dev, "Could not allocate rx urb\n"); | |
2339 | goto exit; | |
2340 | } | |
2341 | hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, | |
2342 | GFP_KERNEL); | |
2343 | if (!hso_net->mux_bulk_rx_buf_pool[i]) { | |
2344 | dev_err(&interface->dev, "Could not allocate rx buf\n"); | |
2345 | goto exit; | |
2346 | } | |
2347 | } | |
2348 | hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2349 | if (!hso_net->mux_bulk_tx_urb) { | |
2350 | dev_err(&interface->dev, "Could not allocate tx urb\n"); | |
2351 | goto exit; | |
2352 | } | |
2353 | hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); | |
2354 | if (!hso_net->mux_bulk_tx_buf) { | |
2355 | dev_err(&interface->dev, "Could not allocate tx buf\n"); | |
2356 | goto exit; | |
2357 | } | |
2358 | ||
2359 | add_net_device(hso_dev); | |
2360 | ||
2361 | hso_log_port(hso_dev); | |
2362 | ||
2363 | hso_create_rfkill(hso_dev, interface); | |
2364 | ||
2365 | return hso_dev; | |
2366 | exit: | |
2367 | hso_free_net_device(hso_dev); | |
2368 | return NULL; | |
2369 | } | |
2370 | ||
2371 | /* Frees an AT channel ( goes for both mux and non-mux ) */ | |
2372 | static void hso_free_serial_device(struct hso_device *hso_dev) | |
2373 | { | |
2374 | struct hso_serial *serial = dev2ser(hso_dev); | |
2375 | ||
2376 | if (!serial) | |
2377 | return; | |
2378 | set_serial_by_index(serial->minor, NULL); | |
2379 | ||
2380 | hso_serial_common_free(serial); | |
2381 | ||
2382 | if (serial->shared_int) { | |
2383 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2384 | if (--serial->shared_int->ref_count == 0) | |
2385 | hso_free_shared_int(serial->shared_int); | |
2386 | else | |
2387 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2388 | } | |
2389 | kfree(serial); | |
2390 | hso_free_device(hso_dev); | |
2391 | } | |
2392 | ||
2393 | /* Creates a bulk AT channel */ | |
2394 | static struct hso_device *hso_create_bulk_serial_device( | |
2395 | struct usb_interface *interface, int port) | |
2396 | { | |
2397 | struct hso_device *hso_dev; | |
2398 | struct hso_serial *serial; | |
2399 | int num_urbs; | |
2400 | ||
2401 | hso_dev = hso_create_device(interface, port); | |
2402 | if (!hso_dev) | |
2403 | return NULL; | |
2404 | ||
2405 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2406 | if (!serial) | |
2407 | goto exit; | |
2408 | ||
2409 | serial->parent = hso_dev; | |
2410 | hso_dev->port_data.dev_serial = serial; | |
2411 | ||
cd90ee17 | 2412 | if (port & HSO_PORT_MODEM) |
72dc1c09 GKH |
2413 | num_urbs = 2; |
2414 | else | |
2415 | num_urbs = 1; | |
2416 | ||
2417 | if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, | |
2418 | BULK_URB_TX_SIZE)) | |
2419 | goto exit; | |
2420 | ||
2421 | serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2422 | USB_DIR_IN); | |
2423 | if (!serial->in_endp) { | |
2424 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2425 | goto exit2; |
72dc1c09 GKH |
2426 | } |
2427 | ||
2428 | if (! | |
2429 | (serial->out_endp = | |
2430 | hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { | |
2431 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2432 | goto exit2; |
72dc1c09 GKH |
2433 | } |
2434 | ||
2435 | serial->write_data = hso_std_serial_write_data; | |
2436 | ||
2437 | /* and record this serial */ | |
2438 | set_serial_by_index(serial->minor, serial); | |
2439 | ||
2440 | /* setup the proc dirs and files if needed */ | |
2441 | hso_log_port(hso_dev); | |
2442 | ||
2443 | /* done, return it */ | |
2444 | return hso_dev; | |
e57b641d AB |
2445 | |
2446 | exit2: | |
2447 | hso_serial_common_free(serial); | |
72dc1c09 | 2448 | exit: |
72dc1c09 GKH |
2449 | kfree(serial); |
2450 | hso_free_device(hso_dev); | |
2451 | return NULL; | |
2452 | } | |
2453 | ||
2454 | /* Creates a multiplexed AT channel */ | |
2455 | static | |
2456 | struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, | |
2457 | int port, | |
2458 | struct hso_shared_int *mux) | |
2459 | { | |
2460 | struct hso_device *hso_dev; | |
2461 | struct hso_serial *serial; | |
2462 | int port_spec; | |
2463 | ||
2464 | port_spec = HSO_INTF_MUX; | |
2465 | port_spec &= ~HSO_PORT_MASK; | |
2466 | ||
2467 | port_spec |= hso_mux_to_port(port); | |
2468 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) | |
2469 | return NULL; | |
2470 | ||
2471 | hso_dev = hso_create_device(interface, port_spec); | |
2472 | if (!hso_dev) | |
2473 | return NULL; | |
2474 | ||
2475 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2476 | if (!serial) | |
2477 | goto exit; | |
2478 | ||
2479 | hso_dev->port_data.dev_serial = serial; | |
2480 | serial->parent = hso_dev; | |
2481 | ||
2482 | if (hso_serial_common_create | |
2483 | (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) | |
2484 | goto exit; | |
2485 | ||
2486 | serial->tx_data_length--; | |
2487 | serial->write_data = hso_mux_serial_write_data; | |
2488 | ||
2489 | serial->shared_int = mux; | |
2490 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2491 | serial->shared_int->ref_count++; | |
2492 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2493 | ||
2494 | /* and record this serial */ | |
2495 | set_serial_by_index(serial->minor, serial); | |
2496 | ||
2497 | /* setup the proc dirs and files if needed */ | |
2498 | hso_log_port(hso_dev); | |
2499 | ||
2500 | /* done, return it */ | |
2501 | return hso_dev; | |
2502 | ||
2503 | exit: | |
2504 | if (serial) { | |
2505 | tty_unregister_device(tty_drv, serial->minor); | |
2506 | kfree(serial); | |
2507 | } | |
2508 | if (hso_dev) | |
2509 | hso_free_device(hso_dev); | |
2510 | return NULL; | |
2511 | ||
2512 | } | |
2513 | ||
2514 | static void hso_free_shared_int(struct hso_shared_int *mux) | |
2515 | { | |
2516 | usb_free_urb(mux->shared_intr_urb); | |
2517 | kfree(mux->shared_intr_buf); | |
2518 | mutex_unlock(&mux->shared_int_lock); | |
2519 | kfree(mux); | |
2520 | } | |
2521 | ||
2522 | static | |
2523 | struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) | |
2524 | { | |
2525 | struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
2526 | ||
2527 | if (!mux) | |
2528 | return NULL; | |
2529 | ||
2530 | mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, | |
2531 | USB_DIR_IN); | |
2532 | if (!mux->intr_endp) { | |
2533 | dev_err(&interface->dev, "Can't find INT IN endpoint\n"); | |
2534 | goto exit; | |
2535 | } | |
2536 | ||
2537 | mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2538 | if (!mux->shared_intr_urb) { | |
2539 | dev_err(&interface->dev, "Could not allocate intr urb?"); | |
2540 | goto exit; | |
2541 | } | |
2542 | mux->shared_intr_buf = kzalloc(mux->intr_endp->wMaxPacketSize, | |
2543 | GFP_KERNEL); | |
2544 | if (!mux->shared_intr_buf) { | |
2545 | dev_err(&interface->dev, "Could not allocate intr buf?"); | |
2546 | goto exit; | |
2547 | } | |
2548 | ||
2549 | mutex_init(&mux->shared_int_lock); | |
2550 | ||
2551 | return mux; | |
2552 | ||
2553 | exit: | |
2554 | kfree(mux->shared_intr_buf); | |
2555 | usb_free_urb(mux->shared_intr_urb); | |
2556 | kfree(mux); | |
2557 | return NULL; | |
2558 | } | |
2559 | ||
2560 | /* Gets the port spec for a certain interface */ | |
2561 | static int hso_get_config_data(struct usb_interface *interface) | |
2562 | { | |
2563 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
2564 | u8 config_data[17]; | |
2565 | u32 if_num = interface->altsetting->desc.bInterfaceNumber; | |
2566 | s32 result; | |
2567 | ||
2568 | if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), | |
2569 | 0x86, 0xC0, 0, 0, config_data, 17, | |
2570 | USB_CTRL_SET_TIMEOUT) != 0x11) { | |
2571 | return -EIO; | |
2572 | } | |
2573 | ||
2574 | switch (config_data[if_num]) { | |
2575 | case 0x0: | |
2576 | result = 0; | |
2577 | break; | |
2578 | case 0x1: | |
2579 | result = HSO_PORT_DIAG; | |
2580 | break; | |
2581 | case 0x2: | |
2582 | result = HSO_PORT_GPS; | |
2583 | break; | |
2584 | case 0x3: | |
2585 | result = HSO_PORT_GPS_CONTROL; | |
2586 | break; | |
2587 | case 0x4: | |
2588 | result = HSO_PORT_APP; | |
2589 | break; | |
2590 | case 0x5: | |
2591 | result = HSO_PORT_APP2; | |
2592 | break; | |
2593 | case 0x6: | |
2594 | result = HSO_PORT_CONTROL; | |
2595 | break; | |
2596 | case 0x7: | |
2597 | result = HSO_PORT_NETWORK; | |
2598 | break; | |
2599 | case 0x8: | |
2600 | result = HSO_PORT_MODEM; | |
2601 | break; | |
2602 | case 0x9: | |
2603 | result = HSO_PORT_MSD; | |
2604 | break; | |
2605 | case 0xa: | |
2606 | result = HSO_PORT_PCSC; | |
2607 | break; | |
2608 | case 0xb: | |
2609 | result = HSO_PORT_VOICE; | |
2610 | break; | |
2611 | default: | |
2612 | result = 0; | |
2613 | } | |
2614 | ||
2615 | if (result) | |
2616 | result |= HSO_INTF_BULK; | |
2617 | ||
2618 | if (config_data[16] & 0x1) | |
2619 | result |= HSO_INFO_CRC_BUG; | |
2620 | ||
2621 | return result; | |
2622 | } | |
2623 | ||
2624 | /* called once for each interface upon device insertion */ | |
2625 | static int hso_probe(struct usb_interface *interface, | |
2626 | const struct usb_device_id *id) | |
2627 | { | |
2628 | int mux, i, if_num, port_spec; | |
2629 | unsigned char port_mask; | |
2630 | struct hso_device *hso_dev = NULL; | |
2631 | struct hso_shared_int *shared_int; | |
2632 | struct hso_device *tmp_dev = NULL; | |
2633 | ||
2634 | if_num = interface->altsetting->desc.bInterfaceNumber; | |
2635 | ||
2636 | /* Get the interface/port specification from either driver_info or from | |
2637 | * the device itself */ | |
2638 | if (id->driver_info) | |
2639 | port_spec = ((u32 *)(id->driver_info))[if_num]; | |
2640 | else | |
2641 | port_spec = hso_get_config_data(interface); | |
2642 | ||
2643 | if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { | |
2644 | dev_err(&interface->dev, "Not our interface\n"); | |
2645 | return -ENODEV; | |
2646 | } | |
2647 | /* Check if we need to switch to alt interfaces prior to port | |
2648 | * configuration */ | |
2649 | if (interface->num_altsetting > 1) | |
2650 | usb_set_interface(interface_to_usbdev(interface), if_num, 1); | |
2651 | interface->needs_remote_wakeup = 1; | |
2652 | ||
2653 | /* Allocate new hso device(s) */ | |
2654 | switch (port_spec & HSO_INTF_MASK) { | |
2655 | case HSO_INTF_MUX: | |
2656 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2657 | /* Create the network device */ | |
2658 | if (!disable_net) { | |
2659 | hso_dev = hso_create_net_device(interface); | |
2660 | if (!hso_dev) | |
2661 | goto exit; | |
2662 | tmp_dev = hso_dev; | |
2663 | } | |
2664 | } | |
2665 | ||
2666 | if (hso_get_mux_ports(interface, &port_mask)) | |
2667 | /* TODO: de-allocate everything */ | |
2668 | goto exit; | |
2669 | ||
2670 | shared_int = hso_create_shared_int(interface); | |
2671 | if (!shared_int) | |
2672 | goto exit; | |
2673 | ||
2674 | for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { | |
2675 | if (port_mask & i) { | |
2676 | hso_dev = hso_create_mux_serial_device( | |
2677 | interface, i, shared_int); | |
2678 | if (!hso_dev) | |
2679 | goto exit; | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | if (tmp_dev) | |
2684 | hso_dev = tmp_dev; | |
2685 | break; | |
2686 | ||
2687 | case HSO_INTF_BULK: | |
2688 | /* It's a regular bulk interface */ | |
2689 | if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) | |
2690 | && !disable_net) | |
2691 | hso_dev = hso_create_net_device(interface); | |
2692 | else | |
2693 | hso_dev = | |
2694 | hso_create_bulk_serial_device(interface, port_spec); | |
2695 | if (!hso_dev) | |
2696 | goto exit; | |
2697 | break; | |
2698 | default: | |
2699 | goto exit; | |
2700 | } | |
2701 | ||
2702 | usb_driver_claim_interface(&hso_driver, interface, hso_dev); | |
2703 | ||
2704 | /* save our data pointer in this device */ | |
2705 | usb_set_intfdata(interface, hso_dev); | |
2706 | ||
2707 | /* done */ | |
2708 | return 0; | |
2709 | exit: | |
2710 | hso_free_interface(interface); | |
2711 | return -ENODEV; | |
2712 | } | |
2713 | ||
2714 | /* device removed, cleaning up */ | |
2715 | static void hso_disconnect(struct usb_interface *interface) | |
2716 | { | |
2717 | hso_free_interface(interface); | |
2718 | ||
2719 | /* remove reference of our private data */ | |
2720 | usb_set_intfdata(interface, NULL); | |
2721 | ||
2722 | usb_driver_release_interface(&hso_driver, interface); | |
2723 | } | |
2724 | ||
2725 | static void async_get_intf(struct work_struct *data) | |
2726 | { | |
2727 | struct hso_device *hso_dev = | |
2728 | container_of(data, struct hso_device, async_get_intf); | |
2729 | usb_autopm_get_interface(hso_dev->interface); | |
2730 | } | |
2731 | ||
2732 | static void async_put_intf(struct work_struct *data) | |
2733 | { | |
2734 | struct hso_device *hso_dev = | |
2735 | container_of(data, struct hso_device, async_put_intf); | |
2736 | usb_autopm_put_interface(hso_dev->interface); | |
2737 | } | |
2738 | ||
2739 | static int hso_get_activity(struct hso_device *hso_dev) | |
2740 | { | |
2741 | if (hso_dev->usb->state == USB_STATE_SUSPENDED) { | |
2742 | if (!hso_dev->is_active) { | |
2743 | hso_dev->is_active = 1; | |
2744 | schedule_work(&hso_dev->async_get_intf); | |
2745 | } | |
2746 | } | |
2747 | ||
2748 | if (hso_dev->usb->state != USB_STATE_CONFIGURED) | |
2749 | return -EAGAIN; | |
2750 | ||
2751 | usb_mark_last_busy(hso_dev->usb); | |
2752 | ||
2753 | return 0; | |
2754 | } | |
2755 | ||
2756 | static int hso_put_activity(struct hso_device *hso_dev) | |
2757 | { | |
2758 | if (hso_dev->usb->state != USB_STATE_SUSPENDED) { | |
2759 | if (hso_dev->is_active) { | |
2760 | hso_dev->is_active = 0; | |
2761 | schedule_work(&hso_dev->async_put_intf); | |
2762 | return -EAGAIN; | |
2763 | } | |
2764 | } | |
2765 | hso_dev->is_active = 0; | |
2766 | return 0; | |
2767 | } | |
2768 | ||
2769 | /* called by kernel when we need to suspend device */ | |
2770 | static int hso_suspend(struct usb_interface *iface, pm_message_t message) | |
2771 | { | |
2772 | int i, result; | |
2773 | ||
2774 | /* Stop all serial ports */ | |
2775 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
2776 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
2777 | result = hso_stop_serial_device(serial_table[i]); | |
2778 | if (result) | |
2779 | goto out; | |
2780 | } | |
2781 | } | |
2782 | ||
2783 | /* Stop all network ports */ | |
2784 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2785 | if (network_table[i] && | |
2786 | (network_table[i]->interface == iface)) { | |
2787 | result = hso_stop_net_device(network_table[i]); | |
2788 | if (result) | |
2789 | goto out; | |
2790 | } | |
2791 | } | |
2792 | ||
2793 | out: | |
2794 | return 0; | |
2795 | } | |
2796 | ||
2797 | /* called by kernel when we need to resume device */ | |
2798 | static int hso_resume(struct usb_interface *iface) | |
2799 | { | |
2800 | int i, result = 0; | |
2801 | struct hso_net *hso_net; | |
2802 | ||
2803 | /* Start all serial ports */ | |
2804 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
2805 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
2806 | if (dev2ser(serial_table[i])->open_count) { | |
2807 | result = | |
2808 | hso_start_serial_device(serial_table[i], GFP_NOIO); | |
2809 | hso_kick_transmit(dev2ser(serial_table[i])); | |
2810 | if (result) | |
2811 | goto out; | |
2812 | } | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | /* Start all network ports */ | |
2817 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2818 | if (network_table[i] && | |
2819 | (network_table[i]->interface == iface)) { | |
2820 | hso_net = dev2net(network_table[i]); | |
89930b7b DJB |
2821 | if (hso_net->flags & IFF_UP) { |
2822 | /* First transmit any lingering data, | |
2823 | then restart the device. */ | |
2824 | if (hso_net->skb_tx_buf) { | |
2825 | dev_dbg(&iface->dev, | |
2826 | "Transmitting" | |
2827 | " lingering data\n"); | |
2828 | hso_net_start_xmit(hso_net->skb_tx_buf, | |
2829 | hso_net->net); | |
2830 | hso_net->skb_tx_buf = NULL; | |
2831 | } | |
2832 | result = hso_start_net_device(network_table[i]); | |
2833 | if (result) | |
2834 | goto out; | |
72dc1c09 | 2835 | } |
72dc1c09 GKH |
2836 | } |
2837 | } | |
2838 | ||
2839 | out: | |
2840 | return result; | |
2841 | } | |
2842 | ||
2843 | static void hso_serial_ref_free(struct kref *ref) | |
2844 | { | |
2845 | struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); | |
2846 | ||
2847 | hso_free_serial_device(hso_dev); | |
2848 | } | |
2849 | ||
2850 | static void hso_free_interface(struct usb_interface *interface) | |
2851 | { | |
2852 | struct hso_serial *hso_dev; | |
2853 | int i; | |
52429eb2 DJB |
2854 | struct mutex *hso_mutex = NULL; |
2855 | int refcnt = 1; | |
72dc1c09 GKH |
2856 | |
2857 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
2858 | if (serial_table[i] | |
2859 | && (serial_table[i]->interface == interface)) { | |
2860 | hso_dev = dev2ser(serial_table[i]); | |
2861 | if (hso_dev->tty) | |
2862 | tty_hangup(hso_dev->tty); | |
52429eb2 DJB |
2863 | hso_mutex = &hso_dev->parent->mutex->mutex; |
2864 | mutex_lock(hso_mutex); | |
72dc1c09 | 2865 | hso_dev->parent->usb_gone = 1; |
52429eb2 DJB |
2866 | refcnt = kref_put(&serial_table[i]->ref, |
2867 | hso_serial_ref_free); | |
2868 | mutex_unlock(hso_mutex); | |
72dc1c09 GKH |
2869 | } |
2870 | } | |
2871 | ||
2872 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2873 | if (network_table[i] | |
2874 | && (network_table[i]->interface == interface)) { | |
2875 | struct rfkill *rfk = dev2net(network_table[i])->rfkill; | |
2876 | /* hso_stop_net_device doesn't stop the net queue since | |
2877 | * traffic needs to start it again when suspended */ | |
2878 | netif_stop_queue(dev2net(network_table[i])->net); | |
2879 | hso_stop_net_device(network_table[i]); | |
2880 | cancel_work_sync(&network_table[i]->async_put_intf); | |
2881 | cancel_work_sync(&network_table[i]->async_get_intf); | |
0235f641 | 2882 | if (rfk) |
72dc1c09 GKH |
2883 | rfkill_unregister(rfk); |
2884 | hso_free_net_device(network_table[i]); | |
2885 | } | |
2886 | } | |
52429eb2 DJB |
2887 | if (refcnt == 0) |
2888 | hso_free_mutex(container_of(hso_mutex, | |
2889 | struct hso_mutex_t, mutex)); | |
72dc1c09 GKH |
2890 | } |
2891 | ||
2892 | /* Helper functions */ | |
2893 | ||
2894 | /* Get the endpoint ! */ | |
2895 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, | |
2896 | int type, int dir) | |
2897 | { | |
2898 | int i; | |
2899 | struct usb_host_interface *iface = intf->cur_altsetting; | |
2900 | struct usb_endpoint_descriptor *endp; | |
2901 | ||
2902 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
2903 | endp = &iface->endpoint[i].desc; | |
2904 | if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && | |
2905 | ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == type)) | |
2906 | return endp; | |
2907 | } | |
2908 | ||
2909 | return NULL; | |
2910 | } | |
2911 | ||
2912 | /* Get the byte that describes which ports are enabled */ | |
2913 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) | |
2914 | { | |
2915 | int i; | |
2916 | struct usb_host_interface *iface = intf->cur_altsetting; | |
2917 | ||
2918 | if (iface->extralen == 3) { | |
2919 | *ports = iface->extra[2]; | |
2920 | return 0; | |
2921 | } | |
2922 | ||
2923 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
2924 | if (iface->endpoint[i].extralen == 3) { | |
2925 | *ports = iface->endpoint[i].extra[2]; | |
2926 | return 0; | |
2927 | } | |
2928 | } | |
2929 | ||
2930 | return -1; | |
2931 | } | |
2932 | ||
2933 | /* interrupt urb needs to be submitted, used for serial read of muxed port */ | |
2934 | static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, | |
2935 | struct usb_device *usb, gfp_t gfp) | |
2936 | { | |
2937 | int result; | |
2938 | ||
2939 | usb_fill_int_urb(shared_int->shared_intr_urb, usb, | |
2940 | usb_rcvintpipe(usb, | |
2941 | shared_int->intr_endp->bEndpointAddress & 0x7F), | |
2942 | shared_int->shared_intr_buf, | |
2943 | shared_int->intr_endp->wMaxPacketSize, | |
2944 | intr_callback, shared_int, | |
2945 | shared_int->intr_endp->bInterval); | |
2946 | ||
2947 | result = usb_submit_urb(shared_int->shared_intr_urb, gfp); | |
2948 | if (result) | |
2949 | dev_warn(&usb->dev, "%s failed mux_intr_urb %d", __func__, | |
2950 | result); | |
2951 | ||
2952 | return result; | |
2953 | } | |
2954 | ||
2955 | /* operations setup of the serial interface */ | |
6c59f569 | 2956 | static const struct tty_operations hso_serial_ops = { |
72dc1c09 GKH |
2957 | .open = hso_serial_open, |
2958 | .close = hso_serial_close, | |
2959 | .write = hso_serial_write, | |
2960 | .write_room = hso_serial_write_room, | |
2961 | .set_termios = hso_serial_set_termios, | |
2962 | .chars_in_buffer = hso_serial_chars_in_buffer, | |
2963 | .tiocmget = hso_serial_tiocmget, | |
2964 | .tiocmset = hso_serial_tiocmset, | |
8ef5ba63 | 2965 | .unthrottle = hso_unthrottle |
72dc1c09 GKH |
2966 | }; |
2967 | ||
2968 | static struct usb_driver hso_driver = { | |
2969 | .name = driver_name, | |
2970 | .probe = hso_probe, | |
2971 | .disconnect = hso_disconnect, | |
2972 | .id_table = hso_ids, | |
2973 | .suspend = hso_suspend, | |
2974 | .resume = hso_resume, | |
9c8f92ae | 2975 | .reset_resume = hso_resume, |
72dc1c09 GKH |
2976 | .supports_autosuspend = 1, |
2977 | }; | |
2978 | ||
2979 | static int __init hso_init(void) | |
2980 | { | |
2981 | int i; | |
2982 | int result; | |
2983 | ||
2984 | /* put it in the log */ | |
2985 | printk(KERN_INFO "hso: %s\n", version); | |
2986 | ||
2987 | /* Initialise the serial table semaphore and table */ | |
2988 | spin_lock_init(&serial_table_lock); | |
52429eb2 | 2989 | spin_lock_init(&hso_mutex_lock); |
72dc1c09 GKH |
2990 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) |
2991 | serial_table[i] = NULL; | |
2992 | ||
2993 | /* allocate our driver using the proper amount of supported minors */ | |
2994 | tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); | |
2995 | if (!tty_drv) | |
2996 | return -ENOMEM; | |
2997 | ||
2998 | /* fill in all needed values */ | |
2999 | tty_drv->magic = TTY_DRIVER_MAGIC; | |
3000 | tty_drv->owner = THIS_MODULE; | |
3001 | tty_drv->driver_name = driver_name; | |
3002 | tty_drv->name = tty_filename; | |
3003 | ||
3004 | /* if major number is provided as parameter, use that one */ | |
3005 | if (tty_major) | |
3006 | tty_drv->major = tty_major; | |
3007 | ||
3008 | tty_drv->minor_start = 0; | |
3009 | tty_drv->num = HSO_SERIAL_TTY_MINORS; | |
3010 | tty_drv->type = TTY_DRIVER_TYPE_SERIAL; | |
3011 | tty_drv->subtype = SERIAL_TYPE_NORMAL; | |
3012 | tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; | |
3013 | tty_drv->init_termios = tty_std_termios; | |
3014 | tty_drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
3015 | tty_drv->termios = hso_serial_termios; | |
3016 | tty_drv->termios_locked = hso_serial_termios_locked; | |
3017 | tty_set_operations(tty_drv, &hso_serial_ops); | |
3018 | ||
3019 | /* register the tty driver */ | |
3020 | result = tty_register_driver(tty_drv); | |
3021 | if (result) { | |
3022 | printk(KERN_ERR "%s - tty_register_driver failed(%d)\n", | |
3023 | __func__, result); | |
3024 | return result; | |
3025 | } | |
3026 | ||
3027 | /* register this module as an usb driver */ | |
3028 | result = usb_register(&hso_driver); | |
3029 | if (result) { | |
3030 | printk(KERN_ERR "Could not register hso driver? error: %d\n", | |
3031 | result); | |
3032 | /* cleanup serial interface */ | |
3033 | tty_unregister_driver(tty_drv); | |
3034 | return result; | |
3035 | } | |
3036 | ||
3037 | /* done */ | |
3038 | return 0; | |
3039 | } | |
3040 | ||
3041 | static void __exit hso_exit(void) | |
3042 | { | |
3043 | printk(KERN_INFO "hso: unloaded\n"); | |
3044 | ||
3045 | tty_unregister_driver(tty_drv); | |
3046 | /* deregister the usb driver */ | |
3047 | usb_deregister(&hso_driver); | |
3048 | } | |
3049 | ||
3050 | /* Module definitions */ | |
3051 | module_init(hso_init); | |
3052 | module_exit(hso_exit); | |
3053 | ||
3054 | MODULE_AUTHOR(MOD_AUTHOR); | |
3055 | MODULE_DESCRIPTION(MOD_DESCRIPTION); | |
3056 | MODULE_LICENSE(MOD_LICENSE); | |
3057 | MODULE_INFO(Version, DRIVER_VERSION); | |
3058 | ||
3059 | /* change the debug level (eg: insmod hso.ko debug=0x04) */ | |
3060 | MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); | |
3061 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
3062 | ||
3063 | /* set the major tty number (eg: insmod hso.ko tty_major=245) */ | |
3064 | MODULE_PARM_DESC(tty_major, "Set the major tty number"); | |
3065 | module_param(tty_major, int, S_IRUGO | S_IWUSR); | |
3066 | ||
3067 | /* disable network interface (eg: insmod hso.ko disable_net=1) */ | |
3068 | MODULE_PARM_DESC(disable_net, "Disable the network interface"); | |
3069 | module_param(disable_net, int, S_IRUGO | S_IWUSR); |